./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 26d01a9c 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-?-26d01a9 [2023-02-18 07:28:09,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:28:09,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:28:09,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:28:09,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:28:09,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:28:09,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:28:09,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:28:09,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:28:09,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:28:09,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:28:09,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:28:09,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:28:09,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:28:09,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:28:09,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:28:09,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:28:09,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:28:09,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:28:09,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:28:09,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:28:09,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:28:09,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:28:09,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:28:09,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:28:09,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:28:09,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:28:09,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:28:09,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:28:09,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:28:09,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:28:09,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:28:09,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:28:09,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:28:09,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:28:09,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:28:09,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:28:09,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:28:09,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:28:09,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:28:09,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:28:09,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-18 07:28:09,403 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:28:09,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:28:09,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:28:09,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:28:09,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:28:09,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:28:09,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:28:09,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:28:09,405 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:28:09,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 07:28:09,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:28:09,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 07:28:09,407 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 07:28:09,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 07:28:09,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 07:28:09,407 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:28:09,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 07:28:09,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:28:09,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:28:09,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:28:09,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:28:09,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:28:09,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:28:09,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 07:28:09,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:28:09,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:28:09,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:28:09,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 07:28:09,409 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:28:09,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:28:09,410 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:28:09,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-18 07:28:09,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:28:09,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:28:09,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:28:09,632 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:28:09,633 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:28:09,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-18 07:28:10,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:28:10,798 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:28:10,799 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-18 07:28:10,804 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e779ca655/9c9113fccb09431490517fd87e2c02c1/FLAG1c68f92a8 [2023-02-18 07:28:10,829 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e779ca655/9c9113fccb09431490517fd87e2c02c1 [2023-02-18 07:28:10,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:28:10,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:28:10,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:28:10,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:28:10,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:28:10,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:10,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f04be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10, skipping insertion in model container [2023-02-18 07:28:10,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:10,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:28:10,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:28:10,946 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] [2023-02-18 07:28:10,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:28:10,953 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:28:10,965 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] [2023-02-18 07:28:10,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:28:10,974 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:28:10,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10 WrapperNode [2023-02-18 07:28:10,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:28:10,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:28:10,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:28:10,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:28:10,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:10,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:10,995 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-18 07:28:10,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:28:10,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:28:10,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:28:10,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:28:11,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,007 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:28:11,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:28:11,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:28:11,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:28:11,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (1/1) ... [2023-02-18 07:28:11,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:28:11,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:11,035 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) [2023-02-18 07:28:11,052 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 [2023-02-18 07:28:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 07:28:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-18 07:28:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-18 07:28:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:28:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:28:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 07:28:11,115 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:28:11,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:28:11,280 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:28:11,284 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:28:11,300 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 07:28:11,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:28:11 BoogieIcfgContainer [2023-02-18 07:28:11,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:28:11,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:28:11,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:28:11,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:28:11,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:28:10" (1/3) ... [2023-02-18 07:28:11,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b520d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:28:11, skipping insertion in model container [2023-02-18 07:28:11,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:28:10" (2/3) ... [2023-02-18 07:28:11,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b520d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:28:11, skipping insertion in model container [2023-02-18 07:28:11,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:28:11" (3/3) ... [2023-02-18 07:28:11,308 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-18 07:28:11,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:28:11,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-18 07:28:11,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:28:11,387 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;@29136dec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:28:11,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-18 07:28:11,391 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) [2023-02-18 07:28:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 07:28:11,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:11,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:11,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2023-02-18 07:28:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950071082] [2023-02-18 07:28:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:11,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:11,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950071082] [2023-02-18 07:28:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950071082] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:11,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:11,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:28:11,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602859616] [2023-02-18 07:28:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:11,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:28:11,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:28:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:28:11,622 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) [2023-02-18 07:28:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:11,662 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-02-18 07:28:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:28:11,664 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 [2023-02-18 07:28:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:11,670 INFO L225 Difference]: With dead ends: 39 [2023-02-18 07:28:11,670 INFO L226 Difference]: Without dead ends: 29 [2023-02-18 07:28:11,672 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 [2023-02-18 07:28:11,675 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 [2023-02-18 07:28:11,676 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] [2023-02-18 07:28:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-18 07:28:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-18 07:28:11,701 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) [2023-02-18 07:28:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-18 07:28:11,704 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2023-02-18 07:28:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:11,704 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-18 07:28:11,705 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) [2023-02-18 07:28:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-18 07:28:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 07:28:11,705 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:11,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:11,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 07:28:11,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1971761717, now seen corresponding path program 1 times [2023-02-18 07:28:11,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:11,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346491836] [2023-02-18 07:28:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:11,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:11,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:11,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346491836] [2023-02-18 07:28:11,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346491836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:11,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:11,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:28:11,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195534831] [2023-02-18 07:28:11,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:11,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:28:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:11,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:28:11,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:28:11,761 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) [2023-02-18 07:28:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:11,817 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-02-18 07:28:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:28:11,818 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 [2023-02-18 07:28:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:11,819 INFO L225 Difference]: With dead ends: 64 [2023-02-18 07:28:11,819 INFO L226 Difference]: Without dead ends: 42 [2023-02-18 07:28:11,820 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 [2023-02-18 07:28:11,821 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 [2023-02-18 07:28:11,821 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] [2023-02-18 07:28:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-18 07:28:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-02-18 07:28:11,826 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) [2023-02-18 07:28:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-02-18 07:28:11,827 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2023-02-18 07:28:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:11,827 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-02-18 07:28:11,828 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) [2023-02-18 07:28:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-02-18 07:28:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 07:28:11,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:11,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:11,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 07:28:11,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2023-02-18 07:28:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:11,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670344727] [2023-02-18 07:28:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:11,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:11,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670344727] [2023-02-18 07:28:11,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670344727] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:11,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:11,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:28:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339977368] [2023-02-18 07:28:11,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:11,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:28:11,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:11,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:28:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:28:11,872 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) [2023-02-18 07:28:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:11,939 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-02-18 07:28:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:28:11,940 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 [2023-02-18 07:28:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:11,941 INFO L225 Difference]: With dead ends: 58 [2023-02-18 07:28:11,941 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 07:28:11,942 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 [2023-02-18 07:28:11,942 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:28:11,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:28:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 07:28:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-02-18 07:28:11,948 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) [2023-02-18 07:28:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-18 07:28:11,950 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-02-18 07:28:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:11,950 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-18 07:28:11,950 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) [2023-02-18 07:28:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-18 07:28:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 07:28:11,951 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:11,951 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:11,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 07:28:11,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:11,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:11,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2023-02-18 07:28:11,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:11,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830723094] [2023-02-18 07:28:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830723094] [2023-02-18 07:28:11,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830723094] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:11,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:11,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:28:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241481524] [2023-02-18 07:28:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:28:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:28:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:28:12,019 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) [2023-02-18 07:28:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:12,071 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-02-18 07:28:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:28:12,072 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 [2023-02-18 07:28:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:12,073 INFO L225 Difference]: With dead ends: 77 [2023-02-18 07:28:12,073 INFO L226 Difference]: Without dead ends: 76 [2023-02-18 07:28:12,073 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 [2023-02-18 07:28:12,074 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 [2023-02-18 07:28:12,075 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] [2023-02-18 07:28:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-18 07:28:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-02-18 07:28:12,081 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) [2023-02-18 07:28:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-02-18 07:28:12,083 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-02-18 07:28:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:12,083 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-02-18 07:28:12,083 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) [2023-02-18 07:28:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-02-18 07:28:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 07:28:12,084 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:12,084 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:12,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 07:28:12,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2023-02-18 07:28:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:12,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092944995] [2023-02-18 07:28:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:12,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:12,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092944995] [2023-02-18 07:28:12,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092944995] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:12,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:12,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:28:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984794472] [2023-02-18 07:28:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:12,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:28:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:28:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:28:12,137 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) [2023-02-18 07:28:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:12,182 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-02-18 07:28:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:28:12,182 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 [2023-02-18 07:28:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:12,184 INFO L225 Difference]: With dead ends: 121 [2023-02-18 07:28:12,184 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 07:28:12,184 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 [2023-02-18 07:28:12,185 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 [2023-02-18 07:28:12,186 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] [2023-02-18 07:28:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 07:28:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-02-18 07:28:12,194 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) [2023-02-18 07:28:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-02-18 07:28:12,196 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-02-18 07:28:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:12,196 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-02-18 07:28:12,196 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) [2023-02-18 07:28:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-02-18 07:28:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 07:28:12,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:12,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:12,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 07:28:12,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2023-02-18 07:28:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:12,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199034449] [2023-02-18 07:28:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:12,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199034449] [2023-02-18 07:28:12,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199034449] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:12,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:12,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:28:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850485426] [2023-02-18 07:28:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:28:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:28:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:28:12,252 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) [2023-02-18 07:28:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:12,296 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-18 07:28:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:28:12,296 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 [2023-02-18 07:28:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:12,297 INFO L225 Difference]: With dead ends: 102 [2023-02-18 07:28:12,298 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 07:28:12,298 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 [2023-02-18 07:28:12,299 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 [2023-02-18 07:28:12,299 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] [2023-02-18 07:28:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 07:28:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-02-18 07:28:12,307 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) [2023-02-18 07:28:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-02-18 07:28:12,308 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-02-18 07:28:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:12,309 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-02-18 07:28:12,309 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) [2023-02-18 07:28:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-02-18 07:28:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 07:28:12,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:12,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 07:28:12,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:12,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2023-02-18 07:28:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:12,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566398891] [2023-02-18 07:28:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:28:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566398891] [2023-02-18 07:28:12,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566398891] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:12,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191457706] [2023-02-18 07:28:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:12,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:12,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:12,412 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) [2023-02-18 07:28:12,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 07:28:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 07:28:12,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:12,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:12,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191457706] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:12,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:12,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-18 07:28:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900946183] [2023-02-18 07:28:12,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:12,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 07:28:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 07:28:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:28:12,520 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) [2023-02-18 07:28:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:12,616 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-02-18 07:28:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:28:12,617 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 [2023-02-18 07:28:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:12,622 INFO L225 Difference]: With dead ends: 152 [2023-02-18 07:28:12,622 INFO L226 Difference]: Without dead ends: 151 [2023-02-18 07:28:12,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:28:12,631 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:28:12,633 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] [2023-02-18 07:28:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-18 07:28:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-02-18 07:28:12,654 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) [2023-02-18 07:28:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-02-18 07:28:12,660 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-02-18 07:28:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:12,660 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-02-18 07:28:12,660 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) [2023-02-18 07:28:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-02-18 07:28:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 07:28:12,662 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:12,662 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:12,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:12,868 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 [2023-02-18 07:28:12,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2023-02-18 07:28:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:12,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486321813] [2023-02-18 07:28:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:28:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486321813] [2023-02-18 07:28:12,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486321813] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:28:12,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:28:12,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:28:12,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121206550] [2023-02-18 07:28:12,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:28:12,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:28:12,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:12,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:28:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:28:12,918 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) [2023-02-18 07:28:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:12,957 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-02-18 07:28:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:28:12,958 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 [2023-02-18 07:28:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:12,958 INFO L225 Difference]: With dead ends: 163 [2023-02-18 07:28:12,958 INFO L226 Difference]: Without dead ends: 59 [2023-02-18 07:28:12,959 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 [2023-02-18 07:28:12,960 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 [2023-02-18 07:28:12,960 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] [2023-02-18 07:28:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-18 07:28:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-18 07:28:12,965 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) [2023-02-18 07:28:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-18 07:28:12,966 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-02-18 07:28:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:12,966 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-18 07:28:12,966 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) [2023-02-18 07:28:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-18 07:28:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 07:28:12,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:12,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 07:28:12,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2023-02-18 07:28:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:12,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102164098] [2023-02-18 07:28:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:28:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:13,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102164098] [2023-02-18 07:28:13,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102164098] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:13,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882124785] [2023-02-18 07:28:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:13,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:13,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:13,055 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) [2023-02-18 07:28:13,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 07:28:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:28:13,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:13,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:28:13,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882124785] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:13,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:13,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-02-18 07:28:13,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131691151] [2023-02-18 07:28:13,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:13,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 07:28:13,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 07:28:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:28:13,162 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) [2023-02-18 07:28:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:13,251 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-18 07:28:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:28:13,261 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 [2023-02-18 07:28:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:13,261 INFO L225 Difference]: With dead ends: 65 [2023-02-18 07:28:13,261 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 07:28:13,262 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 [2023-02-18 07:28:13,262 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 [2023-02-18 07:28:13,262 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] [2023-02-18 07:28:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 07:28:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-02-18 07:28:13,266 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) [2023-02-18 07:28:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-02-18 07:28:13,266 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-02-18 07:28:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:13,266 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-02-18 07:28:13,267 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) [2023-02-18 07:28:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-02-18 07:28:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 07:28:13,267 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:13,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:13,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 07:28:13,467 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 [2023-02-18 07:28:13,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2023-02-18 07:28:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:13,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52662720] [2023-02-18 07:28:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 07:28:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 07:28:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:13,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52662720] [2023-02-18 07:28:13,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52662720] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:13,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537454893] [2023-02-18 07:28:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:13,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:13,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:13,529 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) [2023-02-18 07:28:13,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 07:28:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 07:28:13,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 07:28:13,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 07:28:13,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537454893] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:13,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:13,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-18 07:28:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181758737] [2023-02-18 07:28:13,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:13,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 07:28:13,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 07:28:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:28:13,614 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) [2023-02-18 07:28:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:13,661 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-02-18 07:28:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:28:13,662 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 [2023-02-18 07:28:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:13,663 INFO L225 Difference]: With dead ends: 71 [2023-02-18 07:28:13,663 INFO L226 Difference]: Without dead ends: 70 [2023-02-18 07:28:13,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:28:13,663 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 [2023-02-18 07:28:13,664 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] [2023-02-18 07:28:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-18 07:28:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-02-18 07:28:13,668 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) [2023-02-18 07:28:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-02-18 07:28:13,668 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-02-18 07:28:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:13,668 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-02-18 07:28:13,669 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) [2023-02-18 07:28:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-02-18 07:28:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 07:28:13,669 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:13,670 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] [2023-02-18 07:28:13,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 07:28:13,874 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 [2023-02-18 07:28:13,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2023-02-18 07:28:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:13,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164008720] [2023-02-18 07:28:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 07:28:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:28:13,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:13,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164008720] [2023-02-18 07:28:13,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164008720] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:13,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675482505] [2023-02-18 07:28:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:13,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:13,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:13,979 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) [2023-02-18 07:28:13,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 07:28:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:14,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 07:28:14,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:28:14,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:28:14,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675482505] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:14,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:14,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-18 07:28:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102205213] [2023-02-18 07:28:14,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:14,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 07:28:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 07:28:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:28:14,066 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) [2023-02-18 07:28:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:14,158 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-02-18 07:28:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:28:14,158 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 [2023-02-18 07:28:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:14,159 INFO L225 Difference]: With dead ends: 93 [2023-02-18 07:28:14,159 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 07:28:14,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-18 07:28:14,160 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 [2023-02-18 07:28:14,160 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] [2023-02-18 07:28:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 07:28:14,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-18 07:28:14,164 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) [2023-02-18 07:28:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-18 07:28:14,164 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-02-18 07:28:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-18 07:28:14,165 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) [2023-02-18 07:28:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-18 07:28:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 07:28:14,166 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:14,166 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:14,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 07:28:14,370 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 [2023-02-18 07:28:14,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2023-02-18 07:28:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:14,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925236660] [2023-02-18 07:28:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:28:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:28:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925236660] [2023-02-18 07:28:14,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925236660] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716093440] [2023-02-18 07:28:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:14,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:14,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:14,483 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) [2023-02-18 07:28:14,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 07:28:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:14,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:28:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:28:14,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 07:28:14,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716093440] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:14,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:14,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-18 07:28:14,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583536869] [2023-02-18 07:28:14,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:14,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 07:28:14,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:14,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 07:28:14,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-18 07:28:14,652 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) [2023-02-18 07:28:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:14,798 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-02-18 07:28:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 07:28:14,798 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 [2023-02-18 07:28:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:14,799 INFO L225 Difference]: With dead ends: 91 [2023-02-18 07:28:14,799 INFO L226 Difference]: Without dead ends: 90 [2023-02-18 07:28:14,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-02-18 07:28:14,800 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 [2023-02-18 07:28:14,800 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] [2023-02-18 07:28:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-18 07:28:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-02-18 07:28:14,804 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) [2023-02-18 07:28:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-02-18 07:28:14,805 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 30 [2023-02-18 07:28:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:14,805 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-02-18 07:28:14,805 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) [2023-02-18 07:28:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-02-18 07:28:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 07:28:14,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:14,806 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] [2023-02-18 07:28:14,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:15,011 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 [2023-02-18 07:28:15,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1774219858, now seen corresponding path program 1 times [2023-02-18 07:28:15,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:15,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463083116] [2023-02-18 07:28:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:15,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-18 07:28:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 07:28:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:15,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463083116] [2023-02-18 07:28:15,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463083116] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:15,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458319413] [2023-02-18 07:28:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:15,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:15,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:15,103 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) [2023-02-18 07:28:15,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 07:28:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:28:15,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 07:28:15,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 07:28:15,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458319413] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:15,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:15,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2023-02-18 07:28:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016568842] [2023-02-18 07:28:15,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:15,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 07:28:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 07:28:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-02-18 07:28:15,244 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) [2023-02-18 07:28:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:15,467 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2023-02-18 07:28:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 07:28:15,468 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 [2023-02-18 07:28:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:15,469 INFO L225 Difference]: With dead ends: 136 [2023-02-18 07:28:15,469 INFO L226 Difference]: Without dead ends: 129 [2023-02-18 07:28:15,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 07:28:15,470 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 [2023-02-18 07:28:15,470 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] [2023-02-18 07:28:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-18 07:28:15,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 73. [2023-02-18 07:28:15,476 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) [2023-02-18 07:28:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-02-18 07:28:15,476 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2023-02-18 07:28:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:15,477 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-02-18 07:28:15,477 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) [2023-02-18 07:28:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-02-18 07:28:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 07:28:15,478 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:15,478 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:15,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:15,683 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 [2023-02-18 07:28:15,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash -181019443, now seen corresponding path program 2 times [2023-02-18 07:28:15,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:15,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585256865] [2023-02-18 07:28:15,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:28:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-18 07:28:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585256865] [2023-02-18 07:28:15,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585256865] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90062608] [2023-02-18 07:28:15,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:28:15,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:15,961 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) [2023-02-18 07:28:15,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 07:28:15,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:28:15,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:16,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 07:28:16,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-18 07:28:16,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-18 07:28:16,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90062608] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:16,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:16,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-02-18 07:28:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711252296] [2023-02-18 07:28:16,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:16,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-18 07:28:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-18 07:28:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-02-18 07:28:16,308 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) [2023-02-18 07:28:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:16,636 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-02-18 07:28:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-18 07:28:16,636 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 [2023-02-18 07:28:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:16,637 INFO L225 Difference]: With dead ends: 145 [2023-02-18 07:28:16,637 INFO L226 Difference]: Without dead ends: 144 [2023-02-18 07:28:16,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 07:28:16,638 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:28:16,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 157 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:28:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-18 07:28:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2023-02-18 07:28:16,642 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) [2023-02-18 07:28:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-02-18 07:28:16,643 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 52 [2023-02-18 07:28:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:16,643 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-02-18 07:28:16,643 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) [2023-02-18 07:28:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-02-18 07:28:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-18 07:28:16,644 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:16,644 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] [2023-02-18 07:28:16,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:16,844 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 [2023-02-18 07:28:16,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash 650575638, now seen corresponding path program 2 times [2023-02-18 07:28:16,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:16,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23557086] [2023-02-18 07:28:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:16,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:16,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-18 07:28:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:28:16,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:16,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23557086] [2023-02-18 07:28:16,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23557086] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:16,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004790349] [2023-02-18 07:28:16,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:28:16,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:16,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:16,933 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) [2023-02-18 07:28:16,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 07:28:16,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:28:16,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:16,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 07:28:16,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:28:17,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:28:17,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004790349] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:17,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:17,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-18 07:28:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152725514] [2023-02-18 07:28:17,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 07:28:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 07:28:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-18 07:28:17,083 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) [2023-02-18 07:28:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:17,217 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-18 07:28:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 07:28:17,217 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 [2023-02-18 07:28:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:17,218 INFO L225 Difference]: With dead ends: 116 [2023-02-18 07:28:17,218 INFO L226 Difference]: Without dead ends: 109 [2023-02-18 07:28:17,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2023-02-18 07:28:17,219 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 [2023-02-18 07:28:17,219 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] [2023-02-18 07:28:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-18 07:28:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-18 07:28:17,222 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) [2023-02-18 07:28:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-02-18 07:28:17,223 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 48 [2023-02-18 07:28:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:17,223 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-02-18 07:28:17,223 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) [2023-02-18 07:28:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-02-18 07:28:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-18 07:28:17,223 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:17,223 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] [2023-02-18 07:28:17,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:17,428 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 [2023-02-18 07:28:17,429 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1989693396, now seen corresponding path program 3 times [2023-02-18 07:28:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:17,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827378937] [2023-02-18 07:28:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-18 07:28:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 119 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-18 07:28:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:17,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827378937] [2023-02-18 07:28:17,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827378937] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:17,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412348150] [2023-02-18 07:28:17,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:28:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:17,714 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) [2023-02-18 07:28:17,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 07:28:17,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-18 07:28:17,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:17,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 07:28:17,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-18 07:28:17,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 68 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 07:28:18,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412348150] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:18,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:18,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2023-02-18 07:28:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614885018] [2023-02-18 07:28:18,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:18,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-18 07:28:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-18 07:28:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 07:28:18,163 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) [2023-02-18 07:28:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:18,882 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2023-02-18 07:28:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-18 07:28:18,883 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 [2023-02-18 07:28:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:18,884 INFO L225 Difference]: With dead ends: 222 [2023-02-18 07:28:18,884 INFO L226 Difference]: Without dead ends: 197 [2023-02-18 07:28:18,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 124 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=913, Invalid=4637, Unknown=0, NotChecked=0, Total=5550 [2023-02-18 07:28:18,886 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 [2023-02-18 07:28:18,887 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] [2023-02-18 07:28:18,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-18 07:28:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 123. [2023-02-18 07:28:18,890 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) [2023-02-18 07:28:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2023-02-18 07:28:18,891 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 70 [2023-02-18 07:28:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:18,891 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2023-02-18 07:28:18,891 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) [2023-02-18 07:28:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2023-02-18 07:28:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-18 07:28:18,892 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:18,892 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:18,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:19,097 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 [2023-02-18 07:28:19,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -916650905, now seen corresponding path program 3 times [2023-02-18 07:28:19,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:19,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011129689] [2023-02-18 07:28:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-18 07:28:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-18 07:28:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:19,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011129689] [2023-02-18 07:28:19,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011129689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:19,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052379585] [2023-02-18 07:28:19,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 07:28:19,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:19,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:19,899 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) [2023-02-18 07:28:19,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 07:28:19,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 07:28:19,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:19,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 07:28:19,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-18 07:28:20,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 30 proven. 289 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-18 07:28:20,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052379585] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:20,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:20,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-02-18 07:28:20,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118584604] [2023-02-18 07:28:20,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:20,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-18 07:28:20,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-18 07:28:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-02-18 07:28:20,938 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) [2023-02-18 07:28:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:21,989 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2023-02-18 07:28:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-18 07:28:21,989 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 [2023-02-18 07:28:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:21,990 INFO L225 Difference]: With dead ends: 237 [2023-02-18 07:28:21,990 INFO L226 Difference]: Without dead ends: 236 [2023-02-18 07:28:21,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 183 SyntacticMatches, 23 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-02-18 07:28:21,993 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 496 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:28:21,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 299 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 07:28:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-18 07:28:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 163. [2023-02-18 07:28:21,998 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) [2023-02-18 07:28:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2023-02-18 07:28:21,998 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 108 [2023-02-18 07:28:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:21,999 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2023-02-18 07:28:21,999 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) [2023-02-18 07:28:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2023-02-18 07:28:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-18 07:28:21,999 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:21,999 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] [2023-02-18 07:28:22,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:22,204 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 [2023-02-18 07:28:22,205 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:22,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1138144878, now seen corresponding path program 4 times [2023-02-18 07:28:22,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:22,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666725712] [2023-02-18 07:28:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:22,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-18 07:28:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-18 07:28:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:23,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666725712] [2023-02-18 07:28:23,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666725712] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:23,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862388852] [2023-02-18 07:28:23,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 07:28:23,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:23,049 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) [2023-02-18 07:28:23,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 07:28:23,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 07:28:23,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:23,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-18 07:28:23,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-18 07:28:23,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 36 proven. 423 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-18 07:28:24,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862388852] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:24,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:24,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2023-02-18 07:28:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446748157] [2023-02-18 07:28:24,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:24,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-18 07:28:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-18 07:28:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2023-02-18 07:28:24,227 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) [2023-02-18 07:28:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:25,894 INFO L93 Difference]: Finished difference Result 330 states and 369 transitions. [2023-02-18 07:28:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-02-18 07:28:25,895 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 [2023-02-18 07:28:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:25,896 INFO L225 Difference]: With dead ends: 330 [2023-02-18 07:28:25,896 INFO L226 Difference]: Without dead ends: 302 [2023-02-18 07:28:25,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 217 SyntacticMatches, 26 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4154 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1872, Invalid=12890, Unknown=0, NotChecked=0, Total=14762 [2023-02-18 07:28:25,900 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 781 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 07:28:25,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 467 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 07:28:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-02-18 07:28:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 267. [2023-02-18 07:28:25,910 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) [2023-02-18 07:28:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2023-02-18 07:28:25,912 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 126 [2023-02-18 07:28:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:25,912 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2023-02-18 07:28:25,913 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) [2023-02-18 07:28:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2023-02-18 07:28:25,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-02-18 07:28:25,914 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:25,914 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] [2023-02-18 07:28:25,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:26,119 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 [2023-02-18 07:28:26,120 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 245585264, now seen corresponding path program 5 times [2023-02-18 07:28:26,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:26,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750079259] [2023-02-18 07:28:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-18 07:28:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 219 proven. 247 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-18 07:28:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750079259] [2023-02-18 07:28:27,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750079259] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:27,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524541739] [2023-02-18 07:28:27,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 07:28:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:27,021 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) [2023-02-18 07:28:27,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 07:28:27,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-02-18 07:28:27,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:27,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-18 07:28:27,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 478 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-02-18 07:28:27,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 522 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-02-18 07:28:28,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524541739] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:28,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:28,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 30] total 66 [2023-02-18 07:28:28,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949440376] [2023-02-18 07:28:28,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:28,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-18 07:28:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-18 07:28:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=3994, Unknown=0, NotChecked=0, Total=4422 [2023-02-18 07:28:28,657 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) [2023-02-18 07:28:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:31,599 INFO L93 Difference]: Finished difference Result 522 states and 585 transitions. [2023-02-18 07:28:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-02-18 07:28:31,600 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 [2023-02-18 07:28:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:31,601 INFO L225 Difference]: With dead ends: 522 [2023-02-18 07:28:31,601 INFO L226 Difference]: Without dead ends: 467 [2023-02-18 07:28:31,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 227 SyntacticMatches, 28 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7948 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3422, Invalid=23968, Unknown=0, NotChecked=0, Total=27390 [2023-02-18 07:28:31,607 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 881 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2023-02-18 07:28:31,608 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] [2023-02-18 07:28:31,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-18 07:28:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 213. [2023-02-18 07:28:31,616 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) [2023-02-18 07:28:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2023-02-18 07:28:31,617 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 136 [2023-02-18 07:28:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:31,617 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2023-02-18 07:28:31,618 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) [2023-02-18 07:28:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2023-02-18 07:28:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-18 07:28:31,622 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:31,622 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:28:31,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:31,827 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 [2023-02-18 07:28:31,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 116292191, now seen corresponding path program 4 times [2023-02-18 07:28:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:31,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271823850] [2023-02-18 07:28:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:31,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-18 07:28:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-18 07:28:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271823850] [2023-02-18 07:28:34,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271823850] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:34,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434824769] [2023-02-18 07:28:34,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 07:28:34,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:34,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:34,845 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) [2023-02-18 07:28:34,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 07:28:35,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 07:28:35,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:35,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-18 07:28:35,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-18 07:28:35,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 70 proven. 909 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-02-18 07:28:39,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434824769] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:39,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:39,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-02-18 07:28:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755241605] [2023-02-18 07:28:39,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:39,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-02-18 07:28:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-02-18 07:28:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-02-18 07:28:39,359 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) [2023-02-18 07:28:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:28:42,490 INFO L93 Difference]: Finished difference Result 445 states and 512 transitions. [2023-02-18 07:28:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-18 07:28:42,491 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 [2023-02-18 07:28:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:28:42,494 INFO L225 Difference]: With dead ends: 445 [2023-02-18 07:28:42,494 INFO L226 Difference]: Without dead ends: 444 [2023-02-18 07:28:42,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 327 SyntacticMatches, 47 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9323 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-02-18 07:28:42,499 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 667 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:28:42,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 588 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 07:28:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-02-18 07:28:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 293. [2023-02-18 07:28:42,512 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) [2023-02-18 07:28:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2023-02-18 07:28:42,513 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 196 [2023-02-18 07:28:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:28:42,513 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2023-02-18 07:28:42,513 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) [2023-02-18 07:28:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2023-02-18 07:28:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-02-18 07:28:42,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:28:42,516 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] [2023-02-18 07:28:42,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 07:28:42,723 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 [2023-02-18 07:28:42,723 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:28:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:28:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1277061724, now seen corresponding path program 6 times [2023-02-18 07:28:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:28:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707596337] [2023-02-18 07:28:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:28:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:28:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:28:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-18 07:28:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:45,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:28:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:28:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 6 proven. 1386 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-02-18 07:28:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:28:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707596337] [2023-02-18 07:28:46,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707596337] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:28:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521170686] [2023-02-18 07:28:46,525 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 07:28:46,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:28:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:28:46,529 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) [2023-02-18 07:28:46,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 07:28:47,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-02-18 07:28:47,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:28:47,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-18 07:28:47,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:28:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1114 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-02-18 07:28:48,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:28:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1194 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-02-18 07:28:52,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521170686] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:28:52,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:28:52,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 42] total 106 [2023-02-18 07:28:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158205671] [2023-02-18 07:28:52,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:28:52,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-18 07:28:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:28:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-18 07:28:52,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=10185, Unknown=0, NotChecked=0, Total=11342 [2023-02-18 07:28:52,488 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) [2023-02-18 07:29:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:29:00,765 INFO L93 Difference]: Finished difference Result 776 states and 885 transitions. [2023-02-18 07:29:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-02-18 07:29:00,765 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 [2023-02-18 07:29:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:29:00,768 INFO L225 Difference]: With dead ends: 776 [2023-02-18 07:29:00,768 INFO L226 Difference]: Without dead ends: 667 [2023-02-18 07:29:00,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 402 SyntacticMatches, 52 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25655 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=8676, Invalid=72264, Unknown=0, NotChecked=0, Total=80940 [2023-02-18 07:29:00,777 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1195 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 7259 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-02-18 07:29:00,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1269 Invalid, 7819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 7259 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-18 07:29:00,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-02-18 07:29:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 383. [2023-02-18 07:29:00,785 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) [2023-02-18 07:29:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 420 transitions. [2023-02-18 07:29:00,786 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 420 transitions. Word has length 236 [2023-02-18 07:29:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:29:00,787 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 420 transitions. [2023-02-18 07:29:00,787 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) [2023-02-18 07:29:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 420 transitions. [2023-02-18 07:29:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-02-18 07:29:00,790 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:29:00,790 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:29:00,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 07:29:01,004 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 [2023-02-18 07:29:01,005 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:29:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:29:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1476676785, now seen corresponding path program 5 times [2023-02-18 07:29:01,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:29:01,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455670538] [2023-02-18 07:29:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:29:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:29:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:29:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:09,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:29:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:29:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-18 07:29:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:29:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455670538] [2023-02-18 07:29:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455670538] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:29:18,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255873574] [2023-02-18 07:29:18,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 07:29:18,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:29:18,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:29:18,870 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) [2023-02-18 07:29:18,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 07:29:19,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2023-02-18 07:29:19,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:29:19,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 130 conjunts are in the unsatisfiable core [2023-02-18 07:29:19,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:29:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-18 07:29:21,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:29:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 150 proven. 2731 refuted. 0 times theorem prover too weak. 2671 trivial. 0 not checked. [2023-02-18 07:29:49,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255873574] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:29:49,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:29:49,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 70] total 170 [2023-02-18 07:29:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887397191] [2023-02-18 07:29:49,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:29:49,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2023-02-18 07:29:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:29:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2023-02-18 07:29:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3118, Invalid=25952, Unknown=0, NotChecked=0, Total=29070 [2023-02-18 07:29:49,273 INFO L87 Difference]: Start difference. First operand 383 states and 420 transitions. Second operand has 171 states, 170 states have (on average 2.2941176470588234) internal successors, (390), 169 states have internal predecessors, (390), 8 states have call successors, (8), 3 states have call predecessors, (8), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) [2023-02-18 07:29:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:29:59,041 INFO L93 Difference]: Finished difference Result 855 states and 986 transitions. [2023-02-18 07:29:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-02-18 07:29:59,057 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 170 states have (on average 2.2941176470588234) internal successors, (390), 169 states have internal predecessors, (390), 8 states have call successors, (8), 3 states have call predecessors, (8), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) Word has length 360 [2023-02-18 07:29:59,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:29:59,064 INFO L225 Difference]: With dead ends: 855 [2023-02-18 07:29:59,064 INFO L226 Difference]: Without dead ends: 854 [2023-02-18 07:29:59,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 589 SyntacticMatches, 93 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37003 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=11346, Invalid=97224, Unknown=0, NotChecked=0, Total=108570 [2023-02-18 07:29:59,075 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1306 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 9167 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 9522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 9167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-18 07:29:59,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1647 Invalid, 9522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 9167 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-18 07:29:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-02-18 07:29:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 543. [2023-02-18 07:29:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 435 states have (on average 1.0114942528735633) internal successors, (440), 434 states have internal predecessors, (440), 6 states have call successors, (6), 4 states have call predecessors, (6), 101 states have return successors, (166), 104 states have call predecessors, (166), 5 states have call successors, (166) [2023-02-18 07:29:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 612 transitions. [2023-02-18 07:29:59,097 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 612 transitions. Word has length 360 [2023-02-18 07:29:59,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:29:59,099 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 612 transitions. [2023-02-18 07:29:59,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 170 states have (on average 2.2941176470588234) internal successors, (390), 169 states have internal predecessors, (390), 8 states have call successors, (8), 3 states have call predecessors, (8), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) [2023-02-18 07:29:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 612 transitions. [2023-02-18 07:29:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-02-18 07:29:59,104 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:29:59,104 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 39, 39, 39, 39, 38, 37, 37, 37, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:29:59,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 07:29:59,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:29:59,323 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:29:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:29:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1058057682, now seen corresponding path program 7 times [2023-02-18 07:29:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:29:59,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399275852] [2023-02-18 07:29:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:29:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:29:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:30:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-18 07:30:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:22,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:30:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 6 proven. 4383 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-18 07:30:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:30:24,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399275852] [2023-02-18 07:30:24,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399275852] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:30:24,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319333475] [2023-02-18 07:30:24,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 07:30:24,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:30:24,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:30:24,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:30:24,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 07:30:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:30:27,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 154 conjunts are in the unsatisfiable core [2023-02-18 07:30:27,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:30:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 6 proven. 4383 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-18 07:30:30,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:31:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 96 proven. 5905 refuted. 0 times theorem prover too weak. 2086 trivial. 0 not checked. [2023-02-18 07:31:11,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319333475] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:31:11,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:31:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 83] total 198 [2023-02-18 07:31:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182223170] [2023-02-18 07:31:11,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:31:11,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2023-02-18 07:31:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:31:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2023-02-18 07:31:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3968, Invalid=35434, Unknown=0, NotChecked=0, Total=39402 [2023-02-18 07:31:11,707 INFO L87 Difference]: Start difference. First operand 543 states and 612 transitions. Second operand has 199 states, 198 states have (on average 2.3636363636363638) internal successors, (468), 197 states have internal predecessors, (468), 13 states have call successors, (15), 3 states have call predecessors, (15), 74 states have return successors, (113), 112 states have call predecessors, (113), 11 states have call successors, (113) [2023-02-18 07:31:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:31:32,530 INFO L93 Difference]: Finished difference Result 1214 states and 1357 transitions. [2023-02-18 07:31:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-02-18 07:31:32,531 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 198 states have (on average 2.3636363636363638) internal successors, (468), 197 states have internal predecessors, (468), 13 states have call successors, (15), 3 states have call predecessors, (15), 74 states have return successors, (113), 112 states have call predecessors, (113), 11 states have call successors, (113) Word has length 434 [2023-02-18 07:31:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:31:32,543 INFO L225 Difference]: With dead ends: 1214 [2023-02-18 07:31:32,544 INFO L226 Difference]: Without dead ends: 1102 [2023-02-18 07:31:32,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1315 GetRequests, 721 SyntacticMatches, 109 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79657 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=19080, Invalid=217602, Unknown=0, NotChecked=0, Total=236682 [2023-02-18 07:31:32,556 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3714 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 21714 mSolverCounterSat, 1171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 22885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1171 IncrementalHoareTripleChecker+Valid, 21714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-02-18 07:31:32,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 4613 Invalid, 22885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1171 Valid, 21714 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-02-18 07:31:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-02-18 07:31:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 927. [2023-02-18 07:31:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 742 states have (on average 1.009433962264151) internal successors, (749), 741 states have internal predecessors, (749), 9 states have call successors, (9), 6 states have call predecessors, (9), 175 states have return successors, (241), 179 states have call predecessors, (241), 7 states have call successors, (241) [2023-02-18 07:31:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 999 transitions. [2023-02-18 07:31:32,577 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 999 transitions. Word has length 434 [2023-02-18 07:31:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:31:32,578 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 999 transitions. [2023-02-18 07:31:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 198 states have (on average 2.3636363636363638) internal successors, (468), 197 states have internal predecessors, (468), 13 states have call successors, (15), 3 states have call predecessors, (15), 74 states have return successors, (113), 112 states have call predecessors, (113), 11 states have call successors, (113) [2023-02-18 07:31:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 999 transitions. [2023-02-18 07:31:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-02-18 07:31:32,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:31:32,584 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 41, 41, 41, 41, 40, 39, 39, 39, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:31:32,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 07:31:32,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-02-18 07:31:32,800 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:31:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:31:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash 508551726, now seen corresponding path program 8 times [2023-02-18 07:31:32,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:31:32,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211314632] [2023-02-18 07:31:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:31:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:31:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:31:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-02-18 07:31:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:57,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:31:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:31:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:32:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:32:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:32:00,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:32:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:32:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8952 backedges. 921 proven. 4059 refuted. 0 times theorem prover too weak. 3972 trivial. 0 not checked. [2023-02-18 07:32:00,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:32:00,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211314632] [2023-02-18 07:32:00,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211314632] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:32:00,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719626563] [2023-02-18 07:32:00,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:32:00,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:32:00,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:32:00,161 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:32:00,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 07:32:08,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:32:08,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:32:08,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 160 conjunts are in the unsatisfiable core [2023-02-18 07:32:08,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:32:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8952 backedges. 9 proven. 4986 refuted. 0 times theorem prover too weak. 3957 trivial. 0 not checked. [2023-02-18 07:32:10,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:32:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8952 backedges. 109 proven. 6570 refuted. 0 times theorem prover too weak. 2273 trivial. 0 not checked. [2023-02-18 07:32:57,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719626563] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:32:57,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:32:57,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 83, 87] total 207 [2023-02-18 07:32:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146175311] [2023-02-18 07:32:57,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:32:57,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2023-02-18 07:32:57,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:32:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2023-02-18 07:32:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4191, Invalid=38865, Unknown=0, NotChecked=0, Total=43056 [2023-02-18 07:32:57,740 INFO L87 Difference]: Start difference. First operand 927 states and 999 transitions. Second operand has 208 states, 207 states have (on average 2.4009661835748792) internal successors, (497), 205 states have internal predecessors, (497), 15 states have call successors, (20), 4 states have call predecessors, (20), 78 states have return successors, (119), 118 states have call predecessors, (119), 13 states have call successors, (119) [2023-02-18 07:33:29,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:33:29,532 INFO L93 Difference]: Finished difference Result 1910 states and 2133 transitions. [2023-02-18 07:33:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 442 states. [2023-02-18 07:33:29,533 INFO L78 Accepts]: Start accepts. Automaton has has 208 states, 207 states have (on average 2.4009661835748792) internal successors, (497), 205 states have internal predecessors, (497), 15 states have call successors, (20), 4 states have call predecessors, (20), 78 states have return successors, (119), 118 states have call predecessors, (119), 13 states have call successors, (119) Word has length 456 [2023-02-18 07:33:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:33:29,537 INFO L225 Difference]: With dead ends: 1910 [2023-02-18 07:33:29,537 INFO L226 Difference]: Without dead ends: 1687 [2023-02-18 07:33:29,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1511 GetRequests, 757 SyntacticMatches, 113 SemanticMatches, 641 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142179 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=34780, Invalid=378026, Unknown=0, NotChecked=0, Total=412806 [2023-02-18 07:33:29,576 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 2846 mSDsluCounter, 3569 mSDsCounter, 0 mSdLazyCounter, 23003 mSolverCounterSat, 1529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 24532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 23003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:33:29,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 3652 Invalid, 24532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1529 Valid, 23003 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-02-18 07:33:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2023-02-18 07:33:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 733. [2023-02-18 07:33:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 587 states have (on average 1.008517887563884) internal successors, (592), 586 states have internal predecessors, (592), 6 states have call successors, (6), 4 states have call predecessors, (6), 139 states have return successors, (204), 142 states have call predecessors, (204), 5 states have call successors, (204) [2023-02-18 07:33:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 802 transitions. [2023-02-18 07:33:29,593 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 802 transitions. Word has length 456 [2023-02-18 07:33:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:33:29,594 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 802 transitions. [2023-02-18 07:33:29,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 207 states have (on average 2.4009661835748792) internal successors, (497), 205 states have internal predecessors, (497), 15 states have call successors, (20), 4 states have call predecessors, (20), 78 states have return successors, (119), 118 states have call predecessors, (119), 13 states have call successors, (119) [2023-02-18 07:33:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 802 transitions. [2023-02-18 07:33:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-02-18 07:33:29,599 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:33:29,599 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 64, 64, 64, 64, 63, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:33:29,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-18 07:33:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:33:29,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 07:33:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:33:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash -883147217, now seen corresponding path program 6 times [2023-02-18 07:33:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:33:29,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674059962] [2023-02-18 07:33:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:33:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:33:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:33:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-18 07:33:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:33:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:33:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:33:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:33:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:33:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:33:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:34:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:34:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:23,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:35:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:35:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:11,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:15,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:33,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 07:36:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:36:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 23148 backedges. 0 proven. 11349 refuted. 0 times theorem prover too weak. 11799 trivial. 0 not checked. [2023-02-18 07:36:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:36:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674059962] [2023-02-18 07:36:34,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674059962] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:36:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933728122] [2023-02-18 07:36:34,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 07:36:34,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:36:34,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:36:34,779 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:36:34,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 07:36:46,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2023-02-18 07:36:46,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:36:46,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1548 conjuncts, 262 conjunts are in the unsatisfiable core [2023-02-18 07:36:46,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:36:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 23148 backedges. 0 proven. 11349 refuted. 0 times theorem prover too weak. 11799 trivial. 0 not checked. [2023-02-18 07:36:52,255 INFO L328 TraceCheckSpWp]: Computing backward predicates...