./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 [2023-02-17 03:40:42,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:40:42,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:40:42,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:40:42,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:40:42,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:40:42,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:40:42,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:40:42,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:40:42,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:40:42,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:40:42,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:40:42,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:40:42,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:40:42,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:40:42,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:40:42,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:40:42,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:40:42,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:40:42,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:40:42,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:40:42,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:40:42,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:40:42,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:40:42,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:40:42,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:40:42,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:40:42,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:40:42,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:40:42,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:40:42,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:40:42,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:40:42,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:40:42,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:40:42,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:40:42,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:40:42,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:40:42,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:40:42,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:40:42,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:40:42,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:40:42,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-17 03:40:42,213 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:40:42,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:40:42,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:40:42,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:40:42,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:40:42,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:40:42,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:40:42,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:40:42,215 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:40:42,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:40:42,216 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:40:42,216 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:40:42,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 03:40:42,217 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:40:42,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 03:40:42,218 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:40:42,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 03:40:42,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:40:42,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:40:42,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:40:42,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:40:42,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:40:42,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:40:42,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 03:40:42,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:40:42,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:40:42,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:40:42,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 03:40:42,220 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:40:42,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:40:42,220 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:40:42,220 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-17 03:40:42,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:40:42,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:40:42,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:40:42,417 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:40:42,418 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:40:42,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-17 03:40:43,360 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:40:43,487 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:40:43,487 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-17 03:40:43,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b6f4031/b984c1f719dc45ff8169c69680cca5a4/FLAG4b7dd0f01 [2023-02-17 03:40:43,500 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b6f4031/b984c1f719dc45ff8169c69680cca5a4 [2023-02-17 03:40:43,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:40:43,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:40:43,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:40:43,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:40:43,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:40:43,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36aa33eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43, skipping insertion in model container [2023-02-17 03:40:43,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:40:43,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:40:43,609 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2023-02-17 03:40:43,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:40:43,625 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:40:43,640 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2023-02-17 03:40:43,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:40:43,654 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:40:43,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43 WrapperNode [2023-02-17 03:40:43,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:40:43,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:40:43,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:40:43,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:40:43,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,676 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-17 03:40:43,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:40:43,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:40:43,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:40:43,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:40:43,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:40:43,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:40:43,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:40:43,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:40:43,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (1/1) ... [2023-02-17 03:40:43,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:40:43,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:43,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 03:40:43,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 03:40:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 03:40:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-17 03:40:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-17 03:40:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:40:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:40:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 03:40:43,802 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:40:43,804 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:40:43,979 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:40:43,983 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:40:43,983 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 03:40:43,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:40:43 BoogieIcfgContainer [2023-02-17 03:40:43,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:40:43,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:40:43,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:40:43,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:40:43,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:40:43" (1/3) ... [2023-02-17 03:40:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcfb3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:40:43, skipping insertion in model container [2023-02-17 03:40:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:40:43" (2/3) ... [2023-02-17 03:40:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fcfb3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:40:43, skipping insertion in model container [2023-02-17 03:40:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:40:43" (3/3) ... [2023-02-17 03:40:43,990 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-17 03:40:44,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:40:44,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-17 03:40:44,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:40:44,044 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;@7f2cc2be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:40:44,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-17 03:40:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 03:40:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 03:40:44,054 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:44,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:44,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:44,061 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2023-02-17 03:40:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:44,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029796883] [2023-02-17 03:40:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:44,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:44,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029796883] [2023-02-17 03:40:44,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029796883] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:44,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:44,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:40:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202382678] [2023-02-17 03:40:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:44,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:40:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:40:44,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:40:44,211 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) [2023-02-17 03:40:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:44,252 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-02-17 03:40:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:40:44,253 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 [2023-02-17 03:40:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:44,258 INFO L225 Difference]: With dead ends: 39 [2023-02-17 03:40:44,258 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 03:40:44,260 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 [2023-02-17 03:40:44,262 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 [2023-02-17 03:40:44,263 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] [2023-02-17 03:40:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 03:40:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-17 03:40:44,288 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) [2023-02-17 03:40:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-17 03:40:44,291 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2023-02-17 03:40:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:44,292 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-17 03:40:44,292 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) [2023-02-17 03:40:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-17 03:40:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 03:40:44,293 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:44,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 03:40:44,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1971761717, now seen corresponding path program 1 times [2023-02-17 03:40:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:44,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934088003] [2023-02-17 03:40:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:44,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:44,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934088003] [2023-02-17 03:40:44,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934088003] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:44,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:44,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:40:44,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086524456] [2023-02-17 03:40:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:44,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:40:44,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:40:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:40:44,374 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) [2023-02-17 03:40:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:44,446 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-02-17 03:40:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:40:44,446 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 [2023-02-17 03:40:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:44,447 INFO L225 Difference]: With dead ends: 64 [2023-02-17 03:40:44,447 INFO L226 Difference]: Without dead ends: 42 [2023-02-17 03:40:44,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:40:44,449 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:40:44,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:40:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-17 03:40:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-02-17 03:40:44,456 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) [2023-02-17 03:40:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-02-17 03:40:44,457 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2023-02-17 03:40:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:44,458 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-02-17 03:40:44,458 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) [2023-02-17 03:40:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-02-17 03:40:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 03:40:44,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:44,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 03:40:44,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2023-02-17 03:40:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415544641] [2023-02-17 03:40:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:44,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415544641] [2023-02-17 03:40:44,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415544641] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:44,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:44,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:40:44,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679624566] [2023-02-17 03:40:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:44,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:40:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:40:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:40:44,516 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) [2023-02-17 03:40:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:44,602 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-02-17 03:40:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:40:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 03:40:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:44,607 INFO L225 Difference]: With dead ends: 58 [2023-02-17 03:40:44,620 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 03:40:44,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:40:44,622 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-17 03:40:44,622 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] [2023-02-17 03:40:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 03:40:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-02-17 03:40:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 03:40:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-17 03:40:44,640 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-02-17 03:40:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:44,640 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-17 03:40:44,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:40:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-17 03:40:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 03:40:44,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:44,641 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:44,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 03:40:44,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2023-02-17 03:40:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:44,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180140261] [2023-02-17 03:40:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:44,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:44,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180140261] [2023-02-17 03:40:44,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180140261] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:44,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:44,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:40:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242022044] [2023-02-17 03:40:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:44,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:40:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:40:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:40:44,691 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:40:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:44,767 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-02-17 03:40:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:40:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 03:40:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:44,769 INFO L225 Difference]: With dead ends: 77 [2023-02-17 03:40:44,769 INFO L226 Difference]: Without dead ends: 76 [2023-02-17 03:40:44,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:40:44,775 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:40:44,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:40:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-17 03:40:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-02-17 03:40:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 03:40:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-02-17 03:40:44,805 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-02-17 03:40:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:44,805 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-02-17 03:40:44,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:40:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-02-17 03:40:44,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 03:40:44,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:44,806 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:44,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 03:40:44,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2023-02-17 03:40:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:44,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735699521] [2023-02-17 03:40:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:44,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:44,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:44,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735699521] [2023-02-17 03:40:44,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735699521] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:44,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:44,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:40:44,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816753647] [2023-02-17 03:40:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:40:44,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:40:44,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:40:44,877 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:40:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:44,931 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-02-17 03:40:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:40:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-17 03:40:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:44,935 INFO L225 Difference]: With dead ends: 121 [2023-02-17 03:40:44,936 INFO L226 Difference]: Without dead ends: 85 [2023-02-17 03:40:44,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:40:44,938 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:40:44,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:40:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-17 03:40:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-02-17 03:40:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-17 03:40:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-02-17 03:40:44,958 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-02-17 03:40:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:44,958 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-02-17 03:40:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:40:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-02-17 03:40:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 03:40:44,959 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:44,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:44,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 03:40:44,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2023-02-17 03:40:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578371222] [2023-02-17 03:40:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:45,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578371222] [2023-02-17 03:40:45,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578371222] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:45,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:45,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:40:45,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275612681] [2023-02-17 03:40:45,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:45,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:40:45,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:45,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:40:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:40:45,013 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:40:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:45,056 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-17 03:40:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:40:45,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-17 03:40:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:45,059 INFO L225 Difference]: With dead ends: 102 [2023-02-17 03:40:45,059 INFO L226 Difference]: Without dead ends: 101 [2023-02-17 03:40:45,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:40:45,064 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:40:45,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:40:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-17 03:40:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-02-17 03:40:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 03:40:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-02-17 03:40:45,080 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-02-17 03:40:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:45,081 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-02-17 03:40:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:40:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-02-17 03:40:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 03:40:45,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:45,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 03:40:45,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2023-02-17 03:40:45,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:45,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397927703] [2023-02-17 03:40:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 03:40:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:45,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397927703] [2023-02-17 03:40:45,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397927703] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:45,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860863685] [2023-02-17 03:40:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:45,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:45,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:45,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:45,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 03:40:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 03:40:45,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860863685] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:45,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:45,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-17 03:40:45,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849269003] [2023-02-17 03:40:45,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:45,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 03:40:45,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 03:40:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:40:45,288 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:40:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:45,353 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-02-17 03:40:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:40:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-17 03:40:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:45,355 INFO L225 Difference]: With dead ends: 152 [2023-02-17 03:40:45,355 INFO L226 Difference]: Without dead ends: 151 [2023-02-17 03:40:45,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:40:45,357 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:40:45,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 03:40:45,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-17 03:40:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-02-17 03:40:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 03:40:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-02-17 03:40:45,377 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-02-17 03:40:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:45,377 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-02-17 03:40:45,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:40:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-02-17 03:40:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 03:40:45,379 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:45,379 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:45,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:45,583 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 [2023-02-17 03:40:45,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2023-02-17 03:40:45,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:45,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919256391] [2023-02-17 03:40:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:45,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 03:40:45,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:45,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919256391] [2023-02-17 03:40:45,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919256391] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:40:45,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:40:45,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:40:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974849499] [2023-02-17 03:40:45,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:40:45,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:40:45,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:40:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:40:45,625 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:40:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:45,657 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-02-17 03:40:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:40:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-17 03:40:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:45,659 INFO L225 Difference]: With dead ends: 163 [2023-02-17 03:40:45,659 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 03:40:45,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:40:45,660 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 [2023-02-17 03:40:45,660 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] [2023-02-17 03:40:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 03:40:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-17 03:40:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 03:40:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-17 03:40:45,671 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-02-17 03:40:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:45,671 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-17 03:40:45,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:40:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-17 03:40:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 03:40:45,673 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:45,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:45,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 03:40:45,673 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2023-02-17 03:40:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:45,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801598245] [2023-02-17 03:40:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 03:40:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:45,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801598245] [2023-02-17 03:40:45,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801598245] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:45,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559075378] [2023-02-17 03:40:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:45,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:45,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:45,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 03:40:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:45,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 03:40:45,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:40:45,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559075378] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:45,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:45,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-02-17 03:40:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95366112] [2023-02-17 03:40:45,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:45,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 03:40:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 03:40:45,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:40:45,839 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:40:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:45,888 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-17 03:40:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:40:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-02-17 03:40:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:45,889 INFO L225 Difference]: With dead ends: 65 [2023-02-17 03:40:45,889 INFO L226 Difference]: Without dead ends: 64 [2023-02-17 03:40:45,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:40:45,890 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 [2023-02-17 03:40:45,890 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] [2023-02-17 03:40:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-17 03:40:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-02-17 03:40:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-17 03:40:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-02-17 03:40:45,894 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-02-17 03:40:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:45,894 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-02-17 03:40:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:40:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-02-17 03:40:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 03:40:45,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:45,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:45,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:46,101 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 [2023-02-17 03:40:46,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2023-02-17 03:40:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:46,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890940714] [2023-02-17 03:40:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 03:40:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:40:46,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:46,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890940714] [2023-02-17 03:40:46,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890940714] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:46,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697166132] [2023-02-17 03:40:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:46,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:46,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:46,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 03:40:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 03:40:46,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:40:46,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:40:46,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697166132] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:46,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:46,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-17 03:40:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011836396] [2023-02-17 03:40:46,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:46,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 03:40:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 03:40:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:40:46,246 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:40:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:46,296 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-02-17 03:40:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:40:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-17 03:40:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:46,302 INFO L225 Difference]: With dead ends: 71 [2023-02-17 03:40:46,303 INFO L226 Difference]: Without dead ends: 70 [2023-02-17 03:40:46,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:40:46,303 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 [2023-02-17 03:40:46,304 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] [2023-02-17 03:40:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-17 03:40:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-02-17 03:40:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.127659574468085) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-17 03:40:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-02-17 03:40:46,308 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-02-17 03:40:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:46,308 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-02-17 03:40:46,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:40:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-02-17 03:40:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 03:40:46,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:46,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:46,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:46,516 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 [2023-02-17 03:40:46,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2023-02-17 03:40:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:46,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503961171] [2023-02-17 03:40:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-17 03:40:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:40:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:46,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503961171] [2023-02-17 03:40:46,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503961171] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:46,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510251965] [2023-02-17 03:40:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:46,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:46,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:46,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:46,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 03:40:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:46,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 03:40:46,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:40:46,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:40:46,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510251965] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:46,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:46,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-17 03:40:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926292308] [2023-02-17 03:40:46,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:46,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 03:40:46,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 03:40:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-17 03:40:46,670 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:40:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:46,756 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-02-17 03:40:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 03:40:46,756 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-02-17 03:40:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:46,757 INFO L225 Difference]: With dead ends: 93 [2023-02-17 03:40:46,757 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 03:40:46,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-17 03:40:46,758 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-02-17 03:40:46,758 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] [2023-02-17 03:40:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 03:40:46,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-17 03:40:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-17 03:40:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-17 03:40:46,762 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-02-17 03:40:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:46,762 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-17 03:40:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:40:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-17 03:40:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 03:40:46,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:46,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:46,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:46,967 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 [2023-02-17 03:40:46,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2023-02-17 03:40:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:46,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994147806] [2023-02-17 03:40:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:46,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 03:40:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:40:47,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:47,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994147806] [2023-02-17 03:40:47,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994147806] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:47,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781107432] [2023-02-17 03:40:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:47,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:47,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:47,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:47,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 03:40:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:40:47,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:40:47,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:40:47,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781107432] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:47,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:47,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-17 03:40:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730373365] [2023-02-17 03:40:47,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 03:40:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 03:40:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-17 03:40:47,252 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 03:40:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:47,383 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-02-17 03:40:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 03:40:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-02-17 03:40:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:47,386 INFO L225 Difference]: With dead ends: 91 [2023-02-17 03:40:47,387 INFO L226 Difference]: Without dead ends: 90 [2023-02-17 03:40:47,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-02-17 03:40:47,389 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 [2023-02-17 03:40:47,389 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] [2023-02-17 03:40:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-17 03:40:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-02-17 03:40:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-17 03:40:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-02-17 03:40:47,394 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 30 [2023-02-17 03:40:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:47,395 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-02-17 03:40:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 03:40:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-02-17 03:40:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 03:40:47,396 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:47,396 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:47,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:47,603 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 [2023-02-17 03:40:47,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1774219858, now seen corresponding path program 1 times [2023-02-17 03:40:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:47,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108354122] [2023-02-17 03:40:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:47,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 03:40:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:40:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108354122] [2023-02-17 03:40:47,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108354122] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842973079] [2023-02-17 03:40:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:47,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:47,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:47,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:47,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 03:40:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:47,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:40:47,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:40:47,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:40:47,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842973079] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:47,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:47,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2023-02-17 03:40:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832117900] [2023-02-17 03:40:47,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 03:40:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 03:40:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-02-17 03:40:47,858 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-17 03:40:48,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:48,016 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2023-02-17 03:40:48,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 03:40:48,017 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2023-02-17 03:40:48,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:48,018 INFO L225 Difference]: With dead ends: 136 [2023-02-17 03:40:48,018 INFO L226 Difference]: Without dead ends: 129 [2023-02-17 03:40:48,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 03:40:48,019 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 [2023-02-17 03:40:48,019 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] [2023-02-17 03:40:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-17 03:40:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 73. [2023-02-17 03:40:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-17 03:40:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-02-17 03:40:48,023 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2023-02-17 03:40:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:48,023 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-02-17 03:40:48,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-17 03:40:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-02-17 03:40:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-17 03:40:48,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:48,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:48,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:48,230 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 [2023-02-17 03:40:48,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:48,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash -181019443, now seen corresponding path program 2 times [2023-02-17 03:40:48,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:48,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505182880] [2023-02-17 03:40:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 03:40:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:48,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-17 03:40:48,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:48,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505182880] [2023-02-17 03:40:48,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505182880] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:48,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654571004] [2023-02-17 03:40:48,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 03:40:48,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:48,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:48,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:48,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 03:40:48,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 03:40:48,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:40:48,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 03:40:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-17 03:40:48,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-17 03:40:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654571004] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:48,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-02-17 03:40:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40795570] [2023-02-17 03:40:48,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:48,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-17 03:40:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-17 03:40:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-02-17 03:40:48,805 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) [2023-02-17 03:40:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:49,144 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-02-17 03:40:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-17 03:40:49,144 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 [2023-02-17 03:40:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:49,146 INFO L225 Difference]: With dead ends: 145 [2023-02-17 03:40:49,146 INFO L226 Difference]: Without dead ends: 144 [2023-02-17 03:40:49,147 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 [2023-02-17 03:40:49,147 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 [2023-02-17 03:40:49,148 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] [2023-02-17 03:40:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-17 03:40:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2023-02-17 03:40:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2023-02-17 03:40:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-02-17 03:40:49,153 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 52 [2023-02-17 03:40:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:49,153 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-02-17 03:40:49,153 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) [2023-02-17 03:40:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-02-17 03:40:49,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-17 03:40:49,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:49,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:49,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:49,359 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 [2023-02-17 03:40:49,359 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash 650575638, now seen corresponding path program 2 times [2023-02-17 03:40:49,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:49,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236883277] [2023-02-17 03:40:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:49,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:49,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 03:40:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:49,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 03:40:49,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:49,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236883277] [2023-02-17 03:40:49,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236883277] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:49,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103701572] [2023-02-17 03:40:49,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 03:40:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:49,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:49,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 03:40:49,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 03:40:49,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:40:49,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:40:49,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 03:40:49,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 03:40:49,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103701572] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:49,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:49,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-17 03:40:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662638678] [2023-02-17 03:40:49,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 03:40:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 03:40:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-17 03:40:49,575 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-17 03:40:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:49,700 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-17 03:40:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 03:40:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 48 [2023-02-17 03:40:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:49,701 INFO L225 Difference]: With dead ends: 116 [2023-02-17 03:40:49,701 INFO L226 Difference]: Without dead ends: 109 [2023-02-17 03:40:49,702 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 [2023-02-17 03:40:49,702 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 [2023-02-17 03:40:49,702 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] [2023-02-17 03:40:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-17 03:40:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-17 03:40:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2023-02-17 03:40:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-02-17 03:40:49,706 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 48 [2023-02-17 03:40:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:49,706 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-02-17 03:40:49,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-17 03:40:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-02-17 03:40:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-17 03:40:49,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:49,707 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:49,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:49,911 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 [2023-02-17 03:40:49,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1989693396, now seen corresponding path program 3 times [2023-02-17 03:40:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887892281] [2023-02-17 03:40:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:49,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-17 03:40:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 119 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-17 03:40:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887892281] [2023-02-17 03:40:50,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887892281] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964523656] [2023-02-17 03:40:50,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 03:40:50,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:50,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:50,181 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:50,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 03:40:50,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-17 03:40:50,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:40:50,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 03:40:50,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-17 03:40:50,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 68 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 03:40:50,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964523656] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:50,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:50,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2023-02-17 03:40:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836569160] [2023-02-17 03:40:50,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-17 03:40:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-17 03:40:50,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 03:40:50,553 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) [2023-02-17 03:40:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:51,249 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2023-02-17 03:40:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-17 03:40:51,251 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 [2023-02-17 03:40:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:51,251 INFO L225 Difference]: With dead ends: 222 [2023-02-17 03:40:51,252 INFO L226 Difference]: Without dead ends: 197 [2023-02-17 03:40:51,253 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 [2023-02-17 03:40:51,254 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 306 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-02-17 03:40:51,254 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] [2023-02-17 03:40:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-17 03:40:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 123. [2023-02-17 03:40:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2023-02-17 03:40:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2023-02-17 03:40:51,258 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 70 [2023-02-17 03:40:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:51,259 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2023-02-17 03:40:51,259 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) [2023-02-17 03:40:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2023-02-17 03:40:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-17 03:40:51,259 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:51,259 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:51,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:51,460 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 [2023-02-17 03:40:51,460 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash -916650905, now seen corresponding path program 3 times [2023-02-17 03:40:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:51,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737715851] [2023-02-17 03:40:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 03:40:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:51,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-17 03:40:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:52,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737715851] [2023-02-17 03:40:52,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737715851] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:52,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106162120] [2023-02-17 03:40:52,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 03:40:52,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:52,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:52,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:52,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 03:40:52,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-17 03:40:52,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:40:52,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 03:40:52,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-17 03:40:52,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 30 proven. 289 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-17 03:40:53,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106162120] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:53,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:53,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-02-17 03:40:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639115089] [2023-02-17 03:40:53,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:53,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-17 03:40:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-17 03:40:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 03:40:53,290 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-02-17 03:40:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:54,269 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2023-02-17 03:40:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-17 03:40:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2023-02-17 03:40:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:54,270 INFO L225 Difference]: With dead ends: 237 [2023-02-17 03:40:54,271 INFO L226 Difference]: Without dead ends: 236 [2023-02-17 03:40:54,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 183 SyntacticMatches, 23 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-02-17 03:40:54,273 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 496 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:40:54,273 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] [2023-02-17 03:40:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-17 03:40:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 163. [2023-02-17 03:40:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (42), 28 states have call predecessors, (42), 5 states have call successors, (42) [2023-02-17 03:40:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2023-02-17 03:40:54,279 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 108 [2023-02-17 03:40:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:54,280 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2023-02-17 03:40:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-02-17 03:40:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2023-02-17 03:40:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-17 03:40:54,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:54,281 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:40:54,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:54,486 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 [2023-02-17 03:40:54,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:54,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1138144878, now seen corresponding path program 4 times [2023-02-17 03:40:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:54,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183167368] [2023-02-17 03:40:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:54,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:54,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-17 03:40:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-17 03:40:55,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183167368] [2023-02-17 03:40:55,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183167368] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589796873] [2023-02-17 03:40:55,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 03:40:55,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:55,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:55,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:55,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 03:40:55,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 03:40:55,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:40:55,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-17 03:40:55,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-17 03:40:55,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:40:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 36 proven. 423 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-17 03:40:56,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589796873] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:40:56,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:40:56,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2023-02-17 03:40:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611036066] [2023-02-17 03:40:56,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:40:56,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-17 03:40:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:40:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-17 03:40:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2023-02-17 03:40:56,341 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) [2023-02-17 03:40:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:40:57,960 INFO L93 Difference]: Finished difference Result 330 states and 369 transitions. [2023-02-17 03:40:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-02-17 03:40:57,960 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 [2023-02-17 03:40:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:40:57,962 INFO L225 Difference]: With dead ends: 330 [2023-02-17 03:40:57,962 INFO L226 Difference]: Without dead ends: 302 [2023-02-17 03:40:57,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 217 SyntacticMatches, 26 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4154 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1872, Invalid=12890, Unknown=0, NotChecked=0, Total=14762 [2023-02-17 03:40:57,966 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 [2023-02-17 03:40:57,966 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] [2023-02-17 03:40:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-02-17 03:40:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 267. [2023-02-17 03:40:57,974 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) [2023-02-17 03:40:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2023-02-17 03:40:57,976 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 126 [2023-02-17 03:40:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:40:57,977 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2023-02-17 03:40:57,977 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) [2023-02-17 03:40:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2023-02-17 03:40:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-02-17 03:40:57,978 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:40:57,978 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] [2023-02-17 03:40:57,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 03:40:58,183 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 [2023-02-17 03:40:58,183 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:40:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:40:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 245585264, now seen corresponding path program 5 times [2023-02-17 03:40:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:40:58,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607114586] [2023-02-17 03:40:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:40:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:40:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:40:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-17 03:40:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:59,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:40:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:40:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 219 proven. 247 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-17 03:40:59,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:40:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607114586] [2023-02-17 03:40:59,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607114586] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:40:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414553201] [2023-02-17 03:40:59,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 03:40:59,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:40:59,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:40:59,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:40:59,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 03:40:59,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-02-17 03:40:59,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:40:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 03:40:59,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:40:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 478 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-02-17 03:40:59,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:41:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 522 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-02-17 03:41:00,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414553201] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:41:00,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:41:00,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 30] total 66 [2023-02-17 03:41:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882718731] [2023-02-17 03:41:00,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:41:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-17 03:41:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:41:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-17 03:41:00,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=3994, Unknown=0, NotChecked=0, Total=4422 [2023-02-17 03:41:00,574 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) [2023-02-17 03:41:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:41:03,488 INFO L93 Difference]: Finished difference Result 522 states and 585 transitions. [2023-02-17 03:41:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-02-17 03:41:03,488 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 [2023-02-17 03:41:03,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:41:03,490 INFO L225 Difference]: With dead ends: 522 [2023-02-17 03:41:03,490 INFO L226 Difference]: Without dead ends: 467 [2023-02-17 03:41:03,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 227 SyntacticMatches, 28 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7948 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3422, Invalid=23968, Unknown=0, NotChecked=0, Total=27390 [2023-02-17 03:41:03,495 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 881 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:41:03,495 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] [2023-02-17 03:41:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-17 03:41:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 213. [2023-02-17 03:41:03,501 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) [2023-02-17 03:41:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2023-02-17 03:41:03,502 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 136 [2023-02-17 03:41:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:41:03,502 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2023-02-17 03:41:03,502 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) [2023-02-17 03:41:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2023-02-17 03:41:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-17 03:41:03,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:41:03,504 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:41:03,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 03:41:03,709 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 [2023-02-17 03:41:03,709 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:41:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:41:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash 116292191, now seen corresponding path program 4 times [2023-02-17 03:41:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:41:03,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052677936] [2023-02-17 03:41:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:41:03,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:41:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 03:41:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-17 03:41:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:41:06,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052677936] [2023-02-17 03:41:06,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052677936] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:41:06,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614473121] [2023-02-17 03:41:06,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 03:41:06,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:41:06,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:41:06,613 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:41:06,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 03:41:06,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 03:41:06,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:41:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-17 03:41:06,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:41:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-17 03:41:07,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:41:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 70 proven. 909 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-02-17 03:41:10,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614473121] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:41:10,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:41:10,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-02-17 03:41:10,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664287500] [2023-02-17 03:41:10,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:41:10,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-02-17 03:41:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:41:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-02-17 03:41:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-02-17 03:41:10,754 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) [2023-02-17 03:41:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:41:13,677 INFO L93 Difference]: Finished difference Result 445 states and 512 transitions. [2023-02-17 03:41:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-17 03:41:13,681 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 [2023-02-17 03:41:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:41:13,683 INFO L225 Difference]: With dead ends: 445 [2023-02-17 03:41:13,683 INFO L226 Difference]: Without dead ends: 444 [2023-02-17 03:41:13,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 327 SyntacticMatches, 47 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9323 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-02-17 03:41:13,687 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, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:41:13,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 588 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 03:41:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-02-17 03:41:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 293. [2023-02-17 03:41:13,697 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) [2023-02-17 03:41:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2023-02-17 03:41:13,698 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 196 [2023-02-17 03:41:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:41:13,698 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2023-02-17 03:41:13,698 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) [2023-02-17 03:41:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2023-02-17 03:41:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-02-17 03:41:13,701 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:41:13,701 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] [2023-02-17 03:41:13,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 03:41:13,907 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 [2023-02-17 03:41:13,907 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:41:13,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:41:13,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1277061724, now seen corresponding path program 6 times [2023-02-17 03:41:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:41:13,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171506582] [2023-02-17 03:41:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:41:13,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:41:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:41:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-17 03:41:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:15,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 6 proven. 1386 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-02-17 03:41:17,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:41:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171506582] [2023-02-17 03:41:17,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171506582] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:41:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445235511] [2023-02-17 03:41:17,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 03:41:17,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:41:17,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:41:17,697 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:41:17,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 03:41:18,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-02-17 03:41:18,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:41:18,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-17 03:41:18,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:41:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1114 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-02-17 03:41:19,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:41:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1194 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-02-17 03:41:23,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445235511] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:41:23,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:41:23,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 42] total 106 [2023-02-17 03:41:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333972537] [2023-02-17 03:41:23,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:41:23,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-17 03:41:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:41:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-17 03:41:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=10185, Unknown=0, NotChecked=0, Total=11342 [2023-02-17 03:41:23,648 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) [2023-02-17 03:41:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:41:31,743 INFO L93 Difference]: Finished difference Result 776 states and 885 transitions. [2023-02-17 03:41:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-02-17 03:41:31,744 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 [2023-02-17 03:41:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:41:31,746 INFO L225 Difference]: With dead ends: 776 [2023-02-17 03:41:31,746 INFO L226 Difference]: Without dead ends: 667 [2023-02-17 03:41:31,755 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 [2023-02-17 03:41:31,755 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1195 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 7259 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:41:31,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1269 Invalid, 7819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 7259 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-17 03:41:31,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-02-17 03:41:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 383. [2023-02-17 03:41:31,764 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) [2023-02-17 03:41:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 420 transitions. [2023-02-17 03:41:31,765 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 420 transitions. Word has length 236 [2023-02-17 03:41:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:41:31,766 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 420 transitions. [2023-02-17 03:41:31,766 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) [2023-02-17 03:41:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 420 transitions. [2023-02-17 03:41:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-02-17 03:41:31,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:41:31,769 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:41:31,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 03:41:31,976 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 [2023-02-17 03:41:31,977 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:41:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:41:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1476676785, now seen corresponding path program 5 times [2023-02-17 03:41:31,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:41:31,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982194287] [2023-02-17 03:41:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:41:31,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:41:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 03:41:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:40,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:41:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:41:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-17 03:41:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:41:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982194287] [2023-02-17 03:41:49,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982194287] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:41:49,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422523593] [2023-02-17 03:41:49,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 03:41:49,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:41:49,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:41:49,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:41:49,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 03:41:50,208 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2023-02-17 03:41:50,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:41:50,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 130 conjunts are in the unsatisfiable core [2023-02-17 03:41:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:41:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-17 03:41:52,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:42:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 150 proven. 2731 refuted. 0 times theorem prover too weak. 2671 trivial. 0 not checked. [2023-02-17 03:42:19,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422523593] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:42:19,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:42:19,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 70] total 170 [2023-02-17 03:42:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198171953] [2023-02-17 03:42:19,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:42:19,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2023-02-17 03:42:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:42:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2023-02-17 03:42:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3118, Invalid=25952, Unknown=0, NotChecked=0, Total=29070 [2023-02-17 03:42:19,734 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) [2023-02-17 03:42:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:42:30,196 INFO L93 Difference]: Finished difference Result 855 states and 986 transitions. [2023-02-17 03:42:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-02-17 03:42:30,198 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 [2023-02-17 03:42:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:42:30,201 INFO L225 Difference]: With dead ends: 855 [2023-02-17 03:42:30,201 INFO L226 Difference]: Without dead ends: 854 [2023-02-17 03:42:30,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 589 SyntacticMatches, 93 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37003 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=11346, Invalid=97224, Unknown=0, NotChecked=0, Total=108570 [2023-02-17 03:42:30,207 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1306 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 9167 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.0s IncrementalHoareTripleChecker+Time [2023-02-17 03:42:30,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1647 Invalid, 9522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 9167 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-17 03:42:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-02-17 03:42:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 543. [2023-02-17 03:42:30,218 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) [2023-02-17 03:42:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 612 transitions. [2023-02-17 03:42:30,220 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 612 transitions. Word has length 360 [2023-02-17 03:42:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:42:30,220 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 612 transitions. [2023-02-17 03:42:30,221 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) [2023-02-17 03:42:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 612 transitions. [2023-02-17 03:42:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-02-17 03:42:30,225 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:42:30,225 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] [2023-02-17 03:42:30,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 03:42:30,441 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 [2023-02-17 03:42:30,441 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:42:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:42:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1058057682, now seen corresponding path program 7 times [2023-02-17 03:42:30,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:42:30,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568503083] [2023-02-17 03:42:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:42:30,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:42:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:42:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-17 03:42:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:38,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:40,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:48,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:42:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 6 proven. 4383 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-17 03:42:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:42:54,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568503083] [2023-02-17 03:42:54,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568503083] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:42:54,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725706334] [2023-02-17 03:42:54,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 03:42:54,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:42:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:42:54,191 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) [2023-02-17 03:42:54,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 03:42:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:42:57,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 154 conjunts are in the unsatisfiable core [2023-02-17 03:42:57,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:42:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 6 proven. 4383 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-17 03:42:59,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:43:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 96 proven. 5905 refuted. 0 times theorem prover too weak. 2086 trivial. 0 not checked. [2023-02-17 03:43:41,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725706334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:43:41,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:43:41,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 83] total 198 [2023-02-17 03:43:41,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074826723] [2023-02-17 03:43:41,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:43:41,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2023-02-17 03:43:41,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:43:41,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2023-02-17 03:43:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3968, Invalid=35434, Unknown=0, NotChecked=0, Total=39402 [2023-02-17 03:43:41,707 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) [2023-02-17 03:44:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:44:03,634 INFO L93 Difference]: Finished difference Result 1214 states and 1357 transitions. [2023-02-17 03:44:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-02-17 03:44:03,634 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 [2023-02-17 03:44:03,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:44:03,638 INFO L225 Difference]: With dead ends: 1214 [2023-02-17 03:44:03,638 INFO L226 Difference]: Without dead ends: 1102 [2023-02-17 03:44:03,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1315 GetRequests, 721 SyntacticMatches, 109 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79657 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=19080, Invalid=217602, Unknown=0, NotChecked=0, Total=236682 [2023-02-17 03:44:03,654 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3714 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 21714 mSolverCounterSat, 1171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.9s IncrementalHoareTripleChecker+Time [2023-02-17 03:44:03,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 4613 Invalid, 22885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1171 Valid, 21714 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-02-17 03:44:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-02-17 03:44:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 927. [2023-02-17 03:44:03,674 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) [2023-02-17 03:44:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 999 transitions. [2023-02-17 03:44:03,679 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 999 transitions. Word has length 434 [2023-02-17 03:44:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:44:03,679 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 999 transitions. [2023-02-17 03:44:03,680 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) [2023-02-17 03:44:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 999 transitions. [2023-02-17 03:44:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-02-17 03:44:03,685 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:44:03,685 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] [2023-02-17 03:44:03,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-17 03:44:03,899 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 [2023-02-17 03:44:03,899 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 03:44:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:44:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 508551726, now seen corresponding path program 8 times [2023-02-17 03:44:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:44:03,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106095081] [2023-02-17 03:44:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:44:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:44:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 03:44:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-02-17 03:44:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:23,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:29,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 03:44:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:44:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8952 backedges. 921 proven. 4059 refuted. 0 times theorem prover too weak. 3972 trivial. 0 not checked. [2023-02-17 03:44:30,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:44:30,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106095081] [2023-02-17 03:44:30,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106095081] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:44:30,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461090017] [2023-02-17 03:44:30,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 03:44:30,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:44:30,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:44:30,155 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) [2023-02-17 03:44:30,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 03:44:36,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 03:44:36,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 03:44:36,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 160 conjunts are in the unsatisfiable core [2023-02-17 03:44:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:44:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8952 backedges. 9 proven. 4986 refuted. 0 times theorem prover too weak. 3957 trivial. 0 not checked. [2023-02-17 03:44:39,466 INFO L328 TraceCheckSpWp]: Computing backward predicates...