./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 6c24879c 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-?-6c24879 [2022-07-13 02:11:36,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:11:36,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:11:36,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:11:36,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:11:36,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:11:36,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:11:36,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:11:36,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:11:36,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:11:36,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:11:36,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:11:36,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:11:36,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:11:36,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:11:36,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:11:36,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:11:36,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:11:36,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:11:36,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:11:36,338 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:11:36,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:11:36,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:11:36,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:11:36,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:11:36,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:11:36,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:11:36,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:11:36,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:11:36,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:11:36,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:11:36,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:11:36,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:11:36,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:11:36,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:11:36,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:11:36,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:11:36,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:11:36,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:11:36,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:11:36,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:11:36,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:11:36,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:11:36,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:11:36,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:11:36,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:11:36,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:11:36,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:11:36,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:11:36,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:11:36,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:11:36,385 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:11:36,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:11:36,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:11:36,386 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:11:36,387 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:11:36,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:11:36,387 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:11:36,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:11:36,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:11:36,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:11:36,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:11:36,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:11:36,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:11:36,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:11:36,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:11:36,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:11:36,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:11:36,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:11:36,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-07-13 02:11:36,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:11:36,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:11:36,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:11:36,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:11:36,624 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:11:36,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-13 02:11:36,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1653c42af/0fa42d4d0d574973ab21097a829a7ccf/FLAG3dd0128a2 [2022-07-13 02:11:37,071 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:11:37,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-13 02:11:37,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1653c42af/0fa42d4d0d574973ab21097a829a7ccf/FLAG3dd0128a2 [2022-07-13 02:11:37,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1653c42af/0fa42d4d0d574973ab21097a829a7ccf [2022-07-13 02:11:37,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:11:37,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:11:37,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:11:37,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:11:37,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:11:37,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b45a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37, skipping insertion in model container [2022-07-13 02:11:37,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:11:37,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:11:37,268 WARN L230 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] [2022-07-13 02:11:37,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:11:37,276 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:11:37,292 WARN L230 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] [2022-07-13 02:11:37,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:11:37,306 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:11:37,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37 WrapperNode [2022-07-13 02:11:37,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:11:37,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:11:37,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:11:37,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:11:37,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,330 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-13 02:11:37,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:11:37,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:11:37,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:11:37,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:11:37,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:11:37,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:11:37,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:11:37,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:11:37,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (1/1) ... [2022-07-13 02:11:37,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:11:37,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:37,388 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) [2022-07-13 02:11:37,406 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 [2022-07-13 02:11:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:11:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-13 02:11:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-13 02:11:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:11:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:11:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:11:37,471 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:11:37,472 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:11:37,621 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:11:37,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:11:37,639 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 02:11:37,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:37 BoogieIcfgContainer [2022-07-13 02:11:37,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:11:37,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:11:37,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:11:37,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:11:37,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:11:37" (1/3) ... [2022-07-13 02:11:37,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd7f97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:37, skipping insertion in model container [2022-07-13 02:11:37,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:37" (2/3) ... [2022-07-13 02:11:37,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd7f97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:37, skipping insertion in model container [2022-07-13 02:11:37,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:37" (3/3) ... [2022-07-13 02:11:37,650 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-07-13 02:11:37,658 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:11:37,659 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 02:11:37,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:11:37,726 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5895cdb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26bb5212 [2022-07-13 02:11:37,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 02:11:37,729 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) [2022-07-13 02:11:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:11:37,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:37,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:37,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-07-13 02:11:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:37,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564471030] [2022-07-13 02:11:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564471030] [2022-07-13 02:11:37,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564471030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:37,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:37,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:37,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887326652] [2022-07-13 02:11:37,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:37,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:37,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:37,921 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:38,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:38,036 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2022-07-13 02:11:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:38,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-13 02:11:38,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:38,045 INFO L225 Difference]: With dead ends: 81 [2022-07-13 02:11:38,046 INFO L226 Difference]: Without dead ends: 43 [2022-07-13 02:11:38,049 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 [2022-07-13 02:11:38,053 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:38,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-13 02:11:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-07-13 02:11:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 02:11:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-07-13 02:11:38,100 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-07-13 02:11:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:38,100 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-07-13 02:11:38,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-07-13 02:11:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:11:38,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:38,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:38,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:11:38,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2022-07-13 02:11:38,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:38,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858231943] [2022-07-13 02:11:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:38,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:38,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858231943] [2022-07-13 02:11:38,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858231943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:38,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:38,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:38,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961319154] [2022-07-13 02:11:38,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:38,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:38,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:38,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:38,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:38,170 INFO L87 Difference]: Start difference. First operand 38 states and 46 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) [2022-07-13 02:11:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:38,255 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-07-13 02:11:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:38,256 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 [2022-07-13 02:11:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:38,257 INFO L225 Difference]: With dead ends: 59 [2022-07-13 02:11:38,257 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 02:11:38,258 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 [2022-07-13 02:11:38,258 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:38,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 02:11:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-07-13 02:11:38,266 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) [2022-07-13 02:11:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-07-13 02:11:38,267 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2022-07-13 02:11:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:38,267 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-07-13 02:11:38,267 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) [2022-07-13 02:11:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-07-13 02:11:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 02:11:38,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:38,268 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:38,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:11:38,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2022-07-13 02:11:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:38,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702756489] [2022-07-13 02:11:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:38,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702756489] [2022-07-13 02:11:38,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702756489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:38,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:38,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856586501] [2022-07-13 02:11:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:38,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:38,306 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-13 02:11:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:38,361 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-07-13 02:11:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2022-07-13 02:11:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:38,363 INFO L225 Difference]: With dead ends: 77 [2022-07-13 02:11:38,363 INFO L226 Difference]: Without dead ends: 76 [2022-07-13 02:11:38,363 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 [2022-07-13 02:11:38,364 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:38,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-13 02:11:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-07-13 02:11:38,376 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) [2022-07-13 02:11:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-07-13 02:11:38,378 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2022-07-13 02:11:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:38,378 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-07-13 02:11:38,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-13 02:11:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-07-13 02:11:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 02:11:38,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:38,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:38,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:11:38,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2022-07-13 02:11:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:38,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607217777] [2022-07-13 02:11:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:38,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607217777] [2022-07-13 02:11:38,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607217777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:38,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:38,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:38,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596472100] [2022-07-13 02:11:38,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:38,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:38,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:38,451 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-13 02:11:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:38,510 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-07-13 02:11:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:38,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2022-07-13 02:11:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:38,512 INFO L225 Difference]: With dead ends: 121 [2022-07-13 02:11:38,516 INFO L226 Difference]: Without dead ends: 85 [2022-07-13 02:11:38,517 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 [2022-07-13 02:11:38,518 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 [2022-07-13 02:11:38,518 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] [2022-07-13 02:11:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-13 02:11:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-07-13 02:11:38,530 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) [2022-07-13 02:11:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-07-13 02:11:38,539 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2022-07-13 02:11:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-07-13 02:11:38,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-13 02:11:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-07-13 02:11:38,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:11:38,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:38,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:11:38,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2022-07-13 02:11:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:38,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273735008] [2022-07-13 02:11:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:38,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:38,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273735008] [2022-07-13 02:11:38,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273735008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:38,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:38,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625852902] [2022-07-13 02:11:38,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:38,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:38,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:38,585 INFO L87 Difference]: Start difference. First operand 76 states and 97 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) [2022-07-13 02:11:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:38,639 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-07-13 02:11:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:38,640 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 [2022-07-13 02:11:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:38,641 INFO L225 Difference]: With dead ends: 102 [2022-07-13 02:11:38,641 INFO L226 Difference]: Without dead ends: 101 [2022-07-13 02:11:38,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:11:38,642 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 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 [2022-07-13 02:11:38,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-13 02:11:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-07-13 02:11:38,652 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) [2022-07-13 02:11:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-07-13 02:11:38,653 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2022-07-13 02:11:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:38,653 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-07-13 02:11:38,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:11:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-07-13 02:11:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:11:38,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:38,654 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:38,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:11:38,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2022-07-13 02:11:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:38,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385917401] [2022-07-13 02:11:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:38,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385917401] [2022-07-13 02:11:38,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385917401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:38,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:38,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:11:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219876822] [2022-07-13 02:11:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:38,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:38,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:38,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:38,689 INFO L87 Difference]: Start difference. First operand 91 states and 116 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) [2022-07-13 02:11:38,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:38,726 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2022-07-13 02:11:38,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:11:38,726 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 19 [2022-07-13 02:11:38,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:38,727 INFO L225 Difference]: With dead ends: 133 [2022-07-13 02:11:38,727 INFO L226 Difference]: Without dead ends: 59 [2022-07-13 02:11:38,729 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 [2022-07-13 02:11:38,729 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:38,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-13 02:11:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-07-13 02:11:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 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) [2022-07-13 02:11:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-07-13 02:11:38,737 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2022-07-13 02:11:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:38,747 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-07-13 02:11:38,747 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) [2022-07-13 02:11:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-07-13 02:11:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 02:11:38,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:38,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:38,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:11:38,748 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-07-13 02:11:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:38,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031082908] [2022-07-13 02:11:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:11:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:38,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:38,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031082908] [2022-07-13 02:11:38,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031082908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175225609] [2022-07-13 02:11:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:38,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:38,869 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) [2022-07-13 02:11:38,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:11:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:38,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:11:38,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:38,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:39,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175225609] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:39,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:39,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-13 02:11:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938727970] [2022-07-13 02:11:39,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:39,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 02:11:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 02:11:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:39,040 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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) [2022-07-13 02:11:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:39,159 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-07-13 02:11:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:11:39,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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 18 [2022-07-13 02:11:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:39,161 INFO L225 Difference]: With dead ends: 67 [2022-07-13 02:11:39,161 INFO L226 Difference]: Without dead ends: 66 [2022-07-13 02:11:39,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:11:39,164 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:39,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-13 02:11:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-07-13 02:11:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 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) [2022-07-13 02:11:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-07-13 02:11:39,182 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-07-13 02:11:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:39,182 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-07-13 02:11:39,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 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) [2022-07-13 02:11:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-07-13 02:11:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:11:39,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:39,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:39,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:39,399 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 [2022-07-13 02:11:39,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-07-13 02:11:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626964469] [2022-07-13 02:11:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:39,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:11:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:39,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:39,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626964469] [2022-07-13 02:11:39,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626964469] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:39,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000094377] [2022-07-13 02:11:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:39,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:39,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:39,484 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) [2022-07-13 02:11:39,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:11:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:39,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:11:39,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:39,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:39,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000094377] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:39,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:39,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-13 02:11:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139215030] [2022-07-13 02:11:39,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 02:11:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 02:11:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:11:39,588 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2022-07-13 02:11:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:39,677 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-07-13 02:11:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:11:39,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 19 [2022-07-13 02:11:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:39,679 INFO L225 Difference]: With dead ends: 65 [2022-07-13 02:11:39,679 INFO L226 Difference]: Without dead ends: 64 [2022-07-13 02:11:39,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:39,681 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:39,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-13 02:11:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-07-13 02:11:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 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) [2022-07-13 02:11:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-07-13 02:11:39,685 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2022-07-13 02:11:39,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:39,686 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-07-13 02:11:39,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2022-07-13 02:11:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-07-13 02:11:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 02:11:39,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:39,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:39,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 02:11:39,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 02:11:39,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:39,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:39,900 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-07-13 02:11:39,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:39,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591428646] [2022-07-13 02:11:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:39,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 02:11:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:39,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591428646] [2022-07-13 02:11:39,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591428646] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:39,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967791319] [2022-07-13 02:11:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:39,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:39,987 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) [2022-07-13 02:11:39,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:11:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:11:40,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:40,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:40,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967791319] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:40,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:40,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-07-13 02:11:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135067061] [2022-07-13 02:11:40,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 02:11:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 02:11:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:40,125 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-07-13 02:11:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,262 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-07-13 02:11:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:11:40,262 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 25 [2022-07-13 02:11:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,263 INFO L225 Difference]: With dead ends: 94 [2022-07-13 02:11:40,263 INFO L226 Difference]: Without dead ends: 93 [2022-07-13 02:11:40,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:11:40,264 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:40,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-13 02:11:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-07-13 02:11:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-13 02:11:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-07-13 02:11:40,272 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2022-07-13 02:11:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,272 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-07-13 02:11:40,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-07-13 02:11:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-07-13 02:11:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 02:11:40,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,274 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] [2022-07-13 02:11:40,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:40,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:40,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-07-13 02:11:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138789482] [2022-07-13 02:11:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 02:11:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:11:40,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138789482] [2022-07-13 02:11:40,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138789482] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:40,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770380326] [2022-07-13 02:11:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:40,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:40,532 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) [2022-07-13 02:11:40,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:11:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:11:40,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 02:11:40,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 02:11:40,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770380326] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:40,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:40,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-13 02:11:40,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406065872] [2022-07-13 02:11:40,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 02:11:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 02:11:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:11:40,629 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2022-07-13 02:11:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,689 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2022-07-13 02:11:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:11:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 26 [2022-07-13 02:11:40,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,691 INFO L225 Difference]: With dead ends: 97 [2022-07-13 02:11:40,691 INFO L226 Difference]: Without dead ends: 64 [2022-07-13 02:11:40,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:40,692 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-13 02:11:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-07-13 02:11:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 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) [2022-07-13 02:11:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-07-13 02:11:40,699 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2022-07-13 02:11:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,699 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-07-13 02:11:40,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2022-07-13 02:11:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-07-13 02:11:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 02:11:40,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:40,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:40,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2022-07-13 02:11:40,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023759770] [2022-07-13 02:11:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:11:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:40,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023759770] [2022-07-13 02:11:40,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023759770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:40,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427583557] [2022-07-13 02:11:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:40,985 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) [2022-07-13 02:11:41,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:11:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:11:41,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:41,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:41,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427583557] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:41,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:41,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-13 02:11:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119295916] [2022-07-13 02:11:41,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:41,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:11:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:11:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:11:41,289 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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), 5 states have call successors, (6) [2022-07-13 02:11:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:41,533 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-07-13 02:11:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 02:11:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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), 5 states have call successors, (6) Word has length 29 [2022-07-13 02:11:41,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:41,536 INFO L225 Difference]: With dead ends: 87 [2022-07-13 02:11:41,536 INFO L226 Difference]: Without dead ends: 86 [2022-07-13 02:11:41,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:11:41,537 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:41,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 133 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-13 02:11:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-07-13 02:11:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 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) [2022-07-13 02:11:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-07-13 02:11:41,541 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 29 [2022-07-13 02:11:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:41,542 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-07-13 02:11:41,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 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), 5 states have call successors, (6) [2022-07-13 02:11:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-07-13 02:11:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 02:11:41,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:41,543 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:41,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:41,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 02:11:41,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 358409096, now seen corresponding path program 1 times [2022-07-13 02:11:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:41,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147689788] [2022-07-13 02:11:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 02:11:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 02:11:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147689788] [2022-07-13 02:11:41,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147689788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600613562] [2022-07-13 02:11:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:41,883 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) [2022-07-13 02:11:41,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:11:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:11:41,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 02:11:41,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:11:42,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600613562] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:42,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:42,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-07-13 02:11:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15478611] [2022-07-13 02:11:42,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:42,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:11:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:11:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:11:42,128 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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) [2022-07-13 02:11:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:42,475 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-13 02:11:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 02:11:42,476 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 36 [2022-07-13 02:11:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:42,477 INFO L225 Difference]: With dead ends: 128 [2022-07-13 02:11:42,477 INFO L226 Difference]: Without dead ends: 123 [2022-07-13 02:11:42,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 02:11:42,478 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:42,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 94 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-13 02:11:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 69. [2022-07-13 02:11:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 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), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-13 02:11:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-07-13 02:11:42,483 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2022-07-13 02:11:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:42,484 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-07-13 02:11:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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) [2022-07-13 02:11:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-07-13 02:11:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 02:11:42,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:42,485 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:42,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:42,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -421481335, now seen corresponding path program 2 times [2022-07-13 02:11:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611542852] [2022-07-13 02:11:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:11:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 02:11:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:42,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611542852] [2022-07-13 02:11:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611542852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526154800] [2022-07-13 02:11:42,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:11:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:42,856 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) [2022-07-13 02:11:42,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:11:42,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:11:42,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:42,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:11:42,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 02:11:43,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 02:11:43,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526154800] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:43,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:43,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2022-07-13 02:11:43,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663548118] [2022-07-13 02:11:43,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:43,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 02:11:43,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 02:11:43,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-07-13 02:11:43,666 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 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) [2022-07-13 02:11:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:44,250 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2022-07-13 02:11:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-13 02:11:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 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 51 [2022-07-13 02:11:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:44,251 INFO L225 Difference]: With dead ends: 140 [2022-07-13 02:11:44,251 INFO L226 Difference]: Without dead ends: 139 [2022-07-13 02:11:44,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2022-07-13 02:11:44,252 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 176 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:11:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-13 02:11:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2022-07-13 02:11:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 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) [2022-07-13 02:11:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-07-13 02:11:44,257 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 51 [2022-07-13 02:11:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:44,257 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-07-13 02:11:44,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 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) [2022-07-13 02:11:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-07-13 02:11:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 02:11:44,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:44,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:44,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:44,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:44,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1225939680, now seen corresponding path program 2 times [2022-07-13 02:11:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:44,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278087725] [2022-07-13 02:11:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 02:11:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:44,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278087725] [2022-07-13 02:11:44,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278087725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:44,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383661293] [2022-07-13 02:11:44,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:11:44,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:44,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:44,526 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) [2022-07-13 02:11:44,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:11:44,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:11:44,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:44,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:11:44,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:44,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:44,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383661293] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:44,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:44,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-13 02:11:44,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470238781] [2022-07-13 02:11:44,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:11:44,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:44,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:11:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:11:44,760 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 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) [2022-07-13 02:11:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:44,980 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2022-07-13 02:11:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 02:11:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 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 47 [2022-07-13 02:11:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:44,981 INFO L225 Difference]: With dead ends: 110 [2022-07-13 02:11:44,981 INFO L226 Difference]: Without dead ends: 105 [2022-07-13 02:11:44,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-07-13 02:11:44,983 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:44,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 173 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-13 02:11:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2022-07-13 02:11:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 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) [2022-07-13 02:11:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-07-13 02:11:44,989 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 47 [2022-07-13 02:11:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:44,989 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-07-13 02:11:44,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 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) [2022-07-13 02:11:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-07-13 02:11:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 02:11:44,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:44,990 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:45,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 02:11:45,204 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1983155908, now seen corresponding path program 3 times [2022-07-13 02:11:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:45,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805962770] [2022-07-13 02:11:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 02:11:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-13 02:11:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805962770] [2022-07-13 02:11:45,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805962770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803627624] [2022-07-13 02:11:45,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:11:45,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:45,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:45,405 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) [2022-07-13 02:11:45,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:11:45,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-13 02:11:45,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:45,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 02:11:45,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 75 proven. 96 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 02:11:45,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-13 02:11:46,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803627624] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:46,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:46,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2022-07-13 02:11:46,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720169889] [2022-07-13 02:11:46,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-13 02:11:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-13 02:11:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 02:11:46,258 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-13 02:11:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:47,484 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-07-13 02:11:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-13 02:11:47,494 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2022-07-13 02:11:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:47,495 INFO L225 Difference]: With dead ends: 208 [2022-07-13 02:11:47,495 INFO L226 Difference]: Without dead ends: 191 [2022-07-13 02:11:47,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=988, Invalid=5174, Unknown=0, NotChecked=0, Total=6162 [2022-07-13 02:11:47,497 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 180 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:47,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 240 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:11:47,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-13 02:11:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 119. [2022-07-13 02:11:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 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) [2022-07-13 02:11:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2022-07-13 02:11:47,502 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 81 [2022-07-13 02:11:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:47,502 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2022-07-13 02:11:47,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-13 02:11:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2022-07-13 02:11:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 02:11:47,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:47,504 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:47,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:47,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 02:11:47,731 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash 274461965, now seen corresponding path program 3 times [2022-07-13 02:11:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:47,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459765001] [2022-07-13 02:11:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:11:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 02:11:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:48,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459765001] [2022-07-13 02:11:48,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459765001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:48,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678740342] [2022-07-13 02:11:48,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:11:48,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:48,024 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) [2022-07-13 02:11:48,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:11:48,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-13 02:11:48,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:48,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-13 02:11:48,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 02:11:48,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:55,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678740342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:55,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:11:55,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-07-13 02:11:55,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395427359] [2022-07-13 02:11:55,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:55,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 02:11:55,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:55,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 02:11:55,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1284, Unknown=2, NotChecked=0, Total=1482 [2022-07-13 02:11:55,713 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 02:11:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:56,698 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2022-07-13 02:11:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 02:11:56,699 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2022-07-13 02:11:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:56,699 INFO L225 Difference]: With dead ends: 166 [2022-07-13 02:11:56,699 INFO L226 Difference]: Without dead ends: 165 [2022-07-13 02:11:56,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=515, Invalid=3515, Unknown=2, NotChecked=0, Total=4032 [2022-07-13 02:11:56,701 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:56,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 378 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:11:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-13 02:11:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 124. [2022-07-13 02:11:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 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), 18 states have return successors, (28), 21 states have call predecessors, (28), 5 states have call successors, (28) [2022-07-13 02:11:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2022-07-13 02:11:56,706 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 95 [2022-07-13 02:11:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:56,706 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2022-07-13 02:11:56,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 02:11:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2022-07-13 02:11:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 02:11:56,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:56,707 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:56,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-13 02:11:56,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 02:11:56,916 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1943630407, now seen corresponding path program 4 times [2022-07-13 02:11:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:56,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692921086] [2022-07-13 02:11:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:11:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-13 02:11:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:57,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692921086] [2022-07-13 02:11:57,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692921086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:57,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48017204] [2022-07-13 02:11:57,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:11:57,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:57,356 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) [2022-07-13 02:11:57,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:11:57,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:11:57,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:57,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-13 02:11:57,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-13 02:11:57,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:27,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48017204] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:27,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:27,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2022-07-13 02:12:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774298685] [2022-07-13 02:12:27,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:27,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 02:12:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 02:12:27,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1312, Unknown=8, NotChecked=0, Total=1482 [2022-07-13 02:12:27,983 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 02:12:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:29,861 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2022-07-13 02:12:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 02:12:29,863 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) Word has length 106 [2022-07-13 02:12:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:29,863 INFO L225 Difference]: With dead ends: 184 [2022-07-13 02:12:29,863 INFO L226 Difference]: Without dead ends: 183 [2022-07-13 02:12:29,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=466, Invalid=3948, Unknown=8, NotChecked=0, Total=4422 [2022-07-13 02:12:29,865 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:29,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 508 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 02:12:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-13 02:12:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2022-07-13 02:12:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 6 states have call successors, (6), 4 states have call predecessors, (6), 19 states have return successors, (30), 22 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-13 02:12:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2022-07-13 02:12:29,876 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 106 [2022-07-13 02:12:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:29,876 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2022-07-13 02:12:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 02:12:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2022-07-13 02:12:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 02:12:29,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:29,878 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:29,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:12:30,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 02:12:30,100 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:12:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1337179471, now seen corresponding path program 5 times [2022-07-13 02:12:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:30,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276580292] [2022-07-13 02:12:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:30,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:12:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 02:12:30,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:30,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276580292] [2022-07-13 02:12:30,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276580292] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:30,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997040925] [2022-07-13 02:12:30,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:12:30,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:30,800 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) [2022-07-13 02:12:30,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:12:30,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-07-13 02:12:30,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:30,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-13 02:12:30,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 02:12:31,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:33,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997040925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:33,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:33,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2022-07-13 02:12:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760708721] [2022-07-13 02:12:33,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:33,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-13 02:12:33,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-13 02:12:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 02:12:33,837 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 02:12:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:35,972 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2022-07-13 02:12:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 02:12:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) Word has length 117 [2022-07-13 02:12:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:35,973 INFO L225 Difference]: With dead ends: 202 [2022-07-13 02:12:35,973 INFO L226 Difference]: Without dead ends: 201 [2022-07-13 02:12:35,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=402, Invalid=4568, Unknown=0, NotChecked=0, Total=4970 [2022-07-13 02:12:35,975 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 161 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:35,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 514 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 02:12:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-13 02:12:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2022-07-13 02:12:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 20 states have return successors, (32), 23 states have call predecessors, (32), 5 states have call successors, (32) [2022-07-13 02:12:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2022-07-13 02:12:35,982 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 117 [2022-07-13 02:12:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:35,983 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2022-07-13 02:12:35,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 02:12:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2022-07-13 02:12:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 02:12:35,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:35,984 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:36,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 02:12:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 02:12:36,193 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:12:36,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 777113877, now seen corresponding path program 6 times [2022-07-13 02:12:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782152216] [2022-07-13 02:12:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 02:12:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-13 02:12:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:36,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782152216] [2022-07-13 02:12:36,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782152216] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515549644] [2022-07-13 02:12:36,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:12:36,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:36,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:36,963 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) [2022-07-13 02:12:36,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 02:12:37,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-13 02:12:37,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:37,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 02:12:37,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-13 02:12:38,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:51,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515549644] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:51,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:51,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2022-07-13 02:12:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645619956] [2022-07-13 02:12:51,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 02:12:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 02:12:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1785, Unknown=3, NotChecked=0, Total=1980 [2022-07-13 02:12:51,151 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 02:12:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:53,649 INFO L93 Difference]: Finished difference Result 220 states and 241 transitions. [2022-07-13 02:12:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-13 02:12:53,650 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2022-07-13 02:12:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:53,651 INFO L225 Difference]: With dead ends: 220 [2022-07-13 02:12:53,651 INFO L226 Difference]: Without dead ends: 219 [2022-07-13 02:12:53,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 148 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=585, Invalid=5892, Unknown=3, NotChecked=0, Total=6480 [2022-07-13 02:12:53,653 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 179 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:53,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 552 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 02:12:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-13 02:12:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2022-07-13 02:12:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 6 states have call successors, (6), 4 states have call predecessors, (6), 21 states have return successors, (34), 24 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-13 02:12:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2022-07-13 02:12:53,658 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 140 [2022-07-13 02:12:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:53,658 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2022-07-13 02:12:53,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 02:12:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2022-07-13 02:12:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 02:12:53,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:53,660 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:53,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 02:12:53,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:53,877 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:12:53,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211640, now seen corresponding path program 4 times [2022-07-13 02:12:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:53,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529405437] [2022-07-13 02:12:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:53,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:12:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 02:12:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-13 02:12:54,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:54,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529405437] [2022-07-13 02:12:54,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529405437] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:54,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267911322] [2022-07-13 02:12:54,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:12:54,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:54,468 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) [2022-07-13 02:12:54,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 02:12:54,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:12:54,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:54,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-13 02:12:54,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-13 02:12:55,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:09,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267911322] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:09,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:09,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 34 [2022-07-13 02:13:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60954322] [2022-07-13 02:13:09,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 02:13:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 02:13:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1597, Unknown=4, NotChecked=0, Total=1806 [2022-07-13 02:13:09,262 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-13 02:13:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:11,425 INFO L93 Difference]: Finished difference Result 242 states and 263 transitions. [2022-07-13 02:13:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 02:13:11,426 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) Word has length 125 [2022-07-13 02:13:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:11,427 INFO L225 Difference]: With dead ends: 242 [2022-07-13 02:13:11,427 INFO L226 Difference]: Without dead ends: 239 [2022-07-13 02:13:11,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=712, Invalid=4984, Unknown=4, NotChecked=0, Total=5700 [2022-07-13 02:13:11,429 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:11,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 492 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 02:13:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-13 02:13:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2022-07-13 02:13:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0434782608695652) internal successors, (168), 160 states have internal predecessors, (168), 9 states have call successors, (9), 6 states have call predecessors, (9), 31 states have return successors, (45), 35 states have call predecessors, (45), 7 states have call successors, (45) [2022-07-13 02:13:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2022-07-13 02:13:11,438 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 125 [2022-07-13 02:13:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:11,438 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2022-07-13 02:13:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-13 02:13:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2022-07-13 02:13:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 02:13:11,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:11,440 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:11,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 02:13:11,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:11,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:13:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1390512751, now seen corresponding path program 7 times [2022-07-13 02:13:11,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983121733] [2022-07-13 02:13:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:11,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:13:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-13 02:13:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:12,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983121733] [2022-07-13 02:13:12,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983121733] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:12,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208042592] [2022-07-13 02:13:12,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:13:12,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:12,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:12,445 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) [2022-07-13 02:13:12,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 02:13:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:12,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 02:13:12,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:13:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-13 02:13:13,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:16,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208042592] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:16,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:16,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2022-07-13 02:13:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659922236] [2022-07-13 02:13:16,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:16,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-13 02:13:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:16,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-13 02:13:16,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2022-07-13 02:13:16,992 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-13 02:13:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:19,904 INFO L93 Difference]: Finished difference Result 314 states and 347 transitions. [2022-07-13 02:13:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-13 02:13:19,904 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2022-07-13 02:13:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:19,905 INFO L225 Difference]: With dead ends: 314 [2022-07-13 02:13:19,905 INFO L226 Difference]: Without dead ends: 313 [2022-07-13 02:13:19,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 140 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=501, Invalid=6639, Unknown=0, NotChecked=0, Total=7140 [2022-07-13 02:13:19,907 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 277 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:19,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 624 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 02:13:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-13 02:13:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 207. [2022-07-13 02:13:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0424242424242425) internal successors, (172), 164 states have internal predecessors, (172), 9 states have call successors, (9), 6 states have call predecessors, (9), 32 states have return successors, (47), 36 states have call predecessors, (47), 7 states have call successors, (47) [2022-07-13 02:13:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2022-07-13 02:13:19,917 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 139 [2022-07-13 02:13:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:19,917 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2022-07-13 02:13:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-13 02:13:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2022-07-13 02:13:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 02:13:19,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:19,919 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 11, 10, 10, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:19,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-13 02:13:20,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:20,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:13:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2054517474, now seen corresponding path program 5 times [2022-07-13 02:13:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:20,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654555487] [2022-07-13 02:13:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:20,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:13:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 02:13:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 6 proven. 486 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-13 02:13:20,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:20,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654555487] [2022-07-13 02:13:20,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654555487] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:20,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986408081] [2022-07-13 02:13:20,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:13:20,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:20,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:20,737 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) [2022-07-13 02:13:20,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 02:13:21,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-13 02:13:21,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:13:21,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-13 02:13:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:13:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 145 proven. 341 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-13 02:13:21,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:36,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986408081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:36,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:36,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 39 [2022-07-13 02:13:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102275262] [2022-07-13 02:13:36,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:36,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 02:13:36,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 02:13:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1798, Unknown=3, NotChecked=0, Total=1980 [2022-07-13 02:13:36,085 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-13 02:13:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:39,792 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-07-13 02:13:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-13 02:13:39,792 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) Word has length 136 [2022-07-13 02:13:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:39,793 INFO L225 Difference]: With dead ends: 270 [2022-07-13 02:13:39,794 INFO L226 Difference]: Without dead ends: 263 [2022-07-13 02:13:39,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=998, Invalid=9099, Unknown=3, NotChecked=0, Total=10100 [2022-07-13 02:13:39,795 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 214 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:39,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 646 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 02:13:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-13 02:13:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 154. [2022-07-13 02:13:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 6 states have call successors, (6), 4 states have call predecessors, (6), 24 states have return successors, (38), 27 states have call predecessors, (38), 5 states have call successors, (38) [2022-07-13 02:13:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2022-07-13 02:13:39,801 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 136 [2022-07-13 02:13:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:39,801 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2022-07-13 02:13:39,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-13 02:13:39,802 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2022-07-13 02:13:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 02:13:39,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:39,805 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:39,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 02:13:40,022 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,SelfDestructingSolverStorable21 [2022-07-13 02:13:40,022 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:13:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:40,022 INFO L85 PathProgramCache]: Analyzing trace with hash -333411757, now seen corresponding path program 8 times [2022-07-13 02:13:40,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:40,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280136683] [2022-07-13 02:13:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:40,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 02:13:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-13 02:13:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:40,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280136683] [2022-07-13 02:13:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280136683] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:40,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134436621] [2022-07-13 02:13:40,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:13:40,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:40,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:40,912 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) [2022-07-13 02:13:40,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 02:13:41,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:13:41,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:13:41,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 02:13:41,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:13:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-13 02:13:42,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:46,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134436621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:46,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:46,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2022-07-13 02:13:46,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113734026] [2022-07-13 02:13:46,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:46,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-13 02:13:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-13 02:13:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 02:13:46,296 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 02:13:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:49,709 INFO L93 Difference]: Finished difference Result 250 states and 273 transitions. [2022-07-13 02:13:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-13 02:13:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) Word has length 162 [2022-07-13 02:13:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:49,711 INFO L225 Difference]: With dead ends: 250 [2022-07-13 02:13:49,711 INFO L226 Difference]: Without dead ends: 249 [2022-07-13 02:13:49,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 167 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=524, Invalid=7486, Unknown=0, NotChecked=0, Total=8010 [2022-07-13 02:13:49,712 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 201 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:49,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 815 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 02:13:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-13 02:13:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2022-07-13 02:13:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (40), 28 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-13 02:13:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2022-07-13 02:13:49,718 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 162 [2022-07-13 02:13:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:49,718 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-07-13 02:13:49,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 02:13:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2022-07-13 02:13:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 02:13:49,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:49,719 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:49,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 02:13:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:49,936 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:13:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1275355944, now seen corresponding path program 6 times [2022-07-13 02:13:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:49,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196843936] [2022-07-13 02:13:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:13:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 02:13:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 2 proven. 436 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-13 02:13:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:50,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196843936] [2022-07-13 02:13:50,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196843936] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:50,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822608443] [2022-07-13 02:13:50,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:13:50,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:50,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:13:50,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 02:13:50,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-07-13 02:13:50,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:13:50,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-13 02:13:50,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:13:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 141 proven. 291 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-13 02:13:51,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:53,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822608443] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:53,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:53,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2022-07-13 02:13:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849992422] [2022-07-13 02:13:53,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:53,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-13 02:13:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-13 02:13:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2022-07-13 02:13:53,910 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-13 02:13:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:58,290 INFO L93 Difference]: Finished difference Result 288 states and 311 transitions. [2022-07-13 02:13:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-13 02:13:58,291 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 135 [2022-07-13 02:13:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:58,292 INFO L225 Difference]: With dead ends: 288 [2022-07-13 02:13:58,292 INFO L226 Difference]: Without dead ends: 283 [2022-07-13 02:13:58,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 139 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=920, Invalid=10422, Unknown=0, NotChecked=0, Total=11342 [2022-07-13 02:13:58,293 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 234 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:58,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 762 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 02:13:58,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-13 02:13:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 164. [2022-07-13 02:13:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 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), 26 states have return successors, (41), 29 states have call predecessors, (41), 5 states have call successors, (41) [2022-07-13 02:13:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2022-07-13 02:13:58,299 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 135 [2022-07-13 02:13:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:58,299 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2022-07-13 02:13:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-13 02:13:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2022-07-13 02:13:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 02:13:58,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:58,301 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:58,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 02:13:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:58,511 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:13:58,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1249721811, now seen corresponding path program 9 times [2022-07-13 02:13:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:58,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119503921] [2022-07-13 02:13:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:13:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-13 02:13:59,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119503921] [2022-07-13 02:13:59,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119503921] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938498385] [2022-07-13 02:13:59,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:13:59,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:59,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:59,480 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:13:59,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 02:13:59,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-13 02:13:59,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:13:59,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 02:13:59,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:14:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-13 02:14:01,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:14:05,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938498385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:05,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:14:05,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2022-07-13 02:14:05,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591768021] [2022-07-13 02:14:05,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:14:05,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 02:14:05,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:14:05,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 02:14:05,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2022-07-13 02:14:05,721 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-13 02:14:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:14:09,495 INFO L93 Difference]: Finished difference Result 265 states and 289 transitions. [2022-07-13 02:14:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-13 02:14:09,496 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) Word has length 161 [2022-07-13 02:14:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:14:09,497 INFO L225 Difference]: With dead ends: 265 [2022-07-13 02:14:09,497 INFO L226 Difference]: Without dead ends: 264 [2022-07-13 02:14:09,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=561, Invalid=8559, Unknown=0, NotChecked=0, Total=9120 [2022-07-13 02:14:09,498 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 219 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:14:09,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 830 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 02:14:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-13 02:14:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 169. [2022-07-13 02:14:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 4 states have call predecessors, (6), 27 states have return successors, (43), 30 states have call predecessors, (43), 5 states have call successors, (43) [2022-07-13 02:14:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2022-07-13 02:14:09,513 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 161 [2022-07-13 02:14:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:14:09,513 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2022-07-13 02:14:09,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-13 02:14:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2022-07-13 02:14:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 02:14:09,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:14:09,515 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 13, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:14:09,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 02:14:09,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:09,723 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:14:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:14:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash -160848100, now seen corresponding path program 7 times [2022-07-13 02:14:09,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:14:09,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916186380] [2022-07-13 02:14:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:14:09,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:14:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:14:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 02:14:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-13 02:14:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:14:10,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916186380] [2022-07-13 02:14:10,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916186380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:10,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51055712] [2022-07-13 02:14:10,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:14:10,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:14:10,480 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:14:10,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 02:14:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:10,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-13 02:14:10,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:14:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-13 02:14:11,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:14:14,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51055712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:14,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:14:14,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2022-07-13 02:14:14,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894848556] [2022-07-13 02:14:14,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:14:14,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-13 02:14:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:14:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-13 02:14:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2022-07-13 02:14:14,457 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-13 02:14:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:14:17,884 INFO L93 Difference]: Finished difference Result 302 states and 326 transitions. [2022-07-13 02:14:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-13 02:14:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) Word has length 158 [2022-07-13 02:14:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:14:17,886 INFO L225 Difference]: With dead ends: 302 [2022-07-13 02:14:17,886 INFO L226 Difference]: Without dead ends: 299 [2022-07-13 02:14:17,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=657, Invalid=7533, Unknown=0, NotChecked=0, Total=8190 [2022-07-13 02:14:17,887 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 206 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:14:17,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 837 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 02:14:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-13 02:14:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2022-07-13 02:14:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 197 states have (on average 1.0355329949238579) internal successors, (204), 196 states have internal predecessors, (204), 9 states have call successors, (9), 6 states have call predecessors, (9), 40 states have return successors, (57), 44 states have call predecessors, (57), 7 states have call successors, (57) [2022-07-13 02:14:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 270 transitions. [2022-07-13 02:14:17,893 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 270 transitions. Word has length 158 [2022-07-13 02:14:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:14:17,893 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 270 transitions. [2022-07-13 02:14:17,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-13 02:14:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 270 transitions. [2022-07-13 02:14:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-13 02:14:17,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:14:17,895 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:14:17,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 02:14:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 02:14:18,099 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:14:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:14:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -286686319, now seen corresponding path program 10 times [2022-07-13 02:14:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:14:18,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123008410] [2022-07-13 02:14:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:14:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:14:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 02:14:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-13 02:14:19,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:14:19,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123008410] [2022-07-13 02:14:19,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123008410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209185932] [2022-07-13 02:14:19,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:14:19,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:19,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:14:19,181 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:14:19,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 02:14:19,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:14:19,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:14:19,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 02:14:19,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:14:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-13 02:14:20,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:14:26,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209185932] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:26,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:14:26,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2022-07-13 02:14:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748704858] [2022-07-13 02:14:26,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:14:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 02:14:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:14:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 02:14:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2022-07-13 02:14:26,481 INFO L87 Difference]: Start difference. First operand 247 states and 270 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-13 02:14:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:14:30,601 INFO L93 Difference]: Finished difference Result 374 states and 410 transitions. [2022-07-13 02:14:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-13 02:14:30,601 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) Word has length 184 [2022-07-13 02:14:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:14:30,602 INFO L225 Difference]: With dead ends: 374 [2022-07-13 02:14:30,602 INFO L226 Difference]: Without dead ends: 373 [2022-07-13 02:14:30,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 189 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=612, Invalid=9894, Unknown=0, NotChecked=0, Total=10506 [2022-07-13 02:14:30,604 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 331 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:14:30,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 989 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 02:14:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-13 02:14:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 252. [2022-07-13 02:14:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 200 states have internal predecessors, (208), 9 states have call successors, (9), 6 states have call predecessors, (9), 41 states have return successors, (59), 45 states have call predecessors, (59), 7 states have call successors, (59) [2022-07-13 02:14:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2022-07-13 02:14:30,611 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 184 [2022-07-13 02:14:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:14:30,611 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2022-07-13 02:14:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-13 02:14:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2022-07-13 02:14:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 02:14:30,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:14:30,612 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 13, 13, 13, 13, 13, 13, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:14:30,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 02:14:30,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-13 02:14:30,829 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:14:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:14:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1765819050, now seen corresponding path program 8 times [2022-07-13 02:14:30,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:14:30,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858929275] [2022-07-13 02:14:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:14:30,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:14:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:14:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 02:14:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 2 proven. 583 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-13 02:14:31,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:14:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858929275] [2022-07-13 02:14:31,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858929275] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926486740] [2022-07-13 02:14:31,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:14:31,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:14:31,630 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:14:31,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 02:14:32,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:14:32,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:14:32,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 02:14:32,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:14:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 169 proven. 410 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-13 02:14:33,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:14:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926486740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:36,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:14:36,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 48 [2022-07-13 02:14:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406425455] [2022-07-13 02:14:36,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:14:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 02:14:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:14:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 02:14:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2396, Unknown=0, NotChecked=0, Total=2550 [2022-07-13 02:14:36,205 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-13 02:14:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:14:41,608 INFO L93 Difference]: Finished difference Result 330 states and 357 transitions. [2022-07-13 02:14:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-13 02:14:41,609 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) Word has length 157 [2022-07-13 02:14:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:14:41,610 INFO L225 Difference]: With dead ends: 330 [2022-07-13 02:14:41,610 INFO L226 Difference]: Without dead ends: 323 [2022-07-13 02:14:41,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1092, Invalid=14408, Unknown=0, NotChecked=0, Total=15500 [2022-07-13 02:14:41,612 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 361 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:14:41,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 974 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 02:14:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-13 02:14:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 184. [2022-07-13 02:14:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 6 states have call successors, (6), 4 states have call predecessors, (6), 30 states have return successors, (47), 33 states have call predecessors, (47), 5 states have call successors, (47) [2022-07-13 02:14:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2022-07-13 02:14:41,618 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 157 [2022-07-13 02:14:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:14:41,619 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2022-07-13 02:14:41,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-13 02:14:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2022-07-13 02:14:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-13 02:14:41,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:14:41,620 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:14:41,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 02:14:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-13 02:14:41,830 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:14:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:14:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1506724331, now seen corresponding path program 11 times [2022-07-13 02:14:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:14:41,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505004504] [2022-07-13 02:14:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:14:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:14:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:41,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:14:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-13 02:14:42,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:14:42,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505004504] [2022-07-13 02:14:42,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505004504] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:42,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445581896] [2022-07-13 02:14:42,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:14:42,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:42,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:14:42,903 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:14:42,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 02:14:43,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-07-13 02:14:43,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:14:43,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 02:14:43,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:14:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-13 02:14:44,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:14:51,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445581896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:51,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:14:51,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-07-13 02:14:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427809235] [2022-07-13 02:14:51,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:14:51,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-13 02:14:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:14:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-13 02:14:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 02:14:51,281 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-13 02:14:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:14:55,831 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2022-07-13 02:14:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-13 02:14:55,832 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) Word has length 183 [2022-07-13 02:14:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:14:55,833 INFO L225 Difference]: With dead ends: 295 [2022-07-13 02:14:55,833 INFO L226 Difference]: Without dead ends: 294 [2022-07-13 02:14:55,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 184 SyntacticMatches, 15 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=635, Invalid=10921, Unknown=0, NotChecked=0, Total=11556 [2022-07-13 02:14:55,834 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 244 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:14:55,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1060 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 02:14:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-13 02:14:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 189. [2022-07-13 02:14:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 6 states have call successors, (6), 4 states have call predecessors, (6), 31 states have return successors, (49), 34 states have call predecessors, (49), 5 states have call successors, (49) [2022-07-13 02:14:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2022-07-13 02:14:55,840 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 183 [2022-07-13 02:14:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:14:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2022-07-13 02:14:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-13 02:14:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2022-07-13 02:14:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 02:14:55,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:14:55,842 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 15, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:14:55,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 02:14:56,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:56,049 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:14:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:14:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash -160493286, now seen corresponding path program 9 times [2022-07-13 02:14:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:14:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235648836] [2022-07-13 02:14:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:14:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:14:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:14:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 02:14:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:14:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:14:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 6 proven. 828 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-07-13 02:14:56,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:14:56,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235648836] [2022-07-13 02:14:56,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235648836] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:14:56,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340249300] [2022-07-13 02:14:56,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:14:56,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:14:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:14:56,923 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:14:56,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 02:14:57,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-07-13 02:14:57,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:14:57,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 02:14:57,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:14:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 201 proven. 627 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-07-13 02:14:58,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:15:02,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340249300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:02,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:15:02,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 51 [2022-07-13 02:15:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46418050] [2022-07-13 02:15:02,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:15:02,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 02:15:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:15:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 02:15:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2698, Unknown=0, NotChecked=0, Total=2862 [2022-07-13 02:15:02,581 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-13 02:15:08,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:15:08,843 INFO L93 Difference]: Finished difference Result 348 states and 374 transitions. [2022-07-13 02:15:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-13 02:15:08,844 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) Word has length 180 [2022-07-13 02:15:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:15:08,845 INFO L225 Difference]: With dead ends: 348 [2022-07-13 02:15:08,845 INFO L226 Difference]: Without dead ends: 343 [2022-07-13 02:15:08,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 188 SyntacticMatches, 11 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1178, Invalid=16644, Unknown=0, NotChecked=0, Total=17822 [2022-07-13 02:15:08,847 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 341 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:15:08,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1093 Invalid, 5267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 02:15:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-13 02:15:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 194. [2022-07-13 02:15:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 32 states have return successors, (50), 35 states have call predecessors, (50), 5 states have call successors, (50) [2022-07-13 02:15:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2022-07-13 02:15:08,854 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 180 [2022-07-13 02:15:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:15:08,855 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2022-07-13 02:15:08,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-13 02:15:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2022-07-13 02:15:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-13 02:15:08,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:15:08,856 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:15:08,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-13 02:15:09,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:15:09,063 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:15:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:15:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1967692977, now seen corresponding path program 12 times [2022-07-13 02:15:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:15:09,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350178833] [2022-07-13 02:15:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:15:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:15:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:15:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:10,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-13 02:15:10,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:15:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350178833] [2022-07-13 02:15:10,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350178833] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463354754] [2022-07-13 02:15:10,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:15:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:15:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:15:10,285 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:15:10,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 02:15:10,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-07-13 02:15:10,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:15:10,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-13 02:15:10,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:15:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-13 02:15:12,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:15:20,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463354754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:20,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:15:20,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2022-07-13 02:15:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232957556] [2022-07-13 02:15:20,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:15:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-13 02:15:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:15:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-13 02:15:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2022-07-13 02:15:20,313 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-13 02:15:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:15:25,605 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2022-07-13 02:15:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-13 02:15:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) Word has length 194 [2022-07-13 02:15:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:15:25,607 INFO L225 Difference]: With dead ends: 310 [2022-07-13 02:15:25,607 INFO L226 Difference]: Without dead ends: 309 [2022-07-13 02:15:25,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 195 SyntacticMatches, 16 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=672, Invalid=12210, Unknown=0, NotChecked=0, Total=12882 [2022-07-13 02:15:25,608 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 365 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 02:15:25,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1223 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 02:15:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-13 02:15:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 199. [2022-07-13 02:15:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 6 states have call successors, (6), 4 states have call predecessors, (6), 33 states have return successors, (52), 36 states have call predecessors, (52), 5 states have call successors, (52) [2022-07-13 02:15:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2022-07-13 02:15:25,614 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 194 [2022-07-13 02:15:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:15:25,615 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2022-07-13 02:15:25,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-13 02:15:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2022-07-13 02:15:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 02:15:25,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:15:25,616 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 15, 15, 15, 15, 15, 15, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:15:25,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 02:15:25,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-13 02:15:25,836 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:15:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:15:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1100004820, now seen corresponding path program 10 times [2022-07-13 02:15:25,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:15:25,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558207870] [2022-07-13 02:15:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:15:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:15:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:15:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 02:15:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-13 02:15:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:15:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558207870] [2022-07-13 02:15:26,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558207870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:26,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526110552] [2022-07-13 02:15:26,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:15:26,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:15:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:15:26,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:15:26,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 02:15:27,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:15:27,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:15:27,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-13 02:15:27,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:15:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-13 02:15:28,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:15:33,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526110552] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:33,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:15:33,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 52 [2022-07-13 02:15:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603954785] [2022-07-13 02:15:33,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:15:33,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-13 02:15:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:15:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-13 02:15:33,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2802, Unknown=0, NotChecked=0, Total=2970 [2022-07-13 02:15:33,499 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-13 02:15:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:15:38,739 INFO L93 Difference]: Finished difference Result 362 states and 389 transitions. [2022-07-13 02:15:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-07-13 02:15:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) Word has length 179 [2022-07-13 02:15:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:15:38,741 INFO L225 Difference]: With dead ends: 362 [2022-07-13 02:15:38,741 INFO L226 Difference]: Without dead ends: 359 [2022-07-13 02:15:38,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 184 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=825, Invalid=11607, Unknown=0, NotChecked=0, Total=12432 [2022-07-13 02:15:38,742 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 254 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 5030 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 5232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 5030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:15:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1198 Invalid, 5232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 5030 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 02:15:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-13 02:15:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 292. [2022-07-13 02:15:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 233 states have (on average 1.0300429184549356) internal successors, (240), 232 states have internal predecessors, (240), 9 states have call successors, (9), 6 states have call predecessors, (9), 49 states have return successors, (69), 53 states have call predecessors, (69), 7 states have call successors, (69) [2022-07-13 02:15:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 318 transitions. [2022-07-13 02:15:38,755 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 318 transitions. Word has length 179 [2022-07-13 02:15:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:15:38,756 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 318 transitions. [2022-07-13 02:15:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-13 02:15:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 318 transitions. [2022-07-13 02:15:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-13 02:15:38,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:15:38,758 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:15:38,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 02:15:38,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-13 02:15:38,967 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:15:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:15:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash -48529833, now seen corresponding path program 13 times [2022-07-13 02:15:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:15:38,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006563900] [2022-07-13 02:15:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:15:38,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:15:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 02:15:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-13 02:15:40,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:15:40,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006563900] [2022-07-13 02:15:40,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006563900] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:40,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425005636] [2022-07-13 02:15:40,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:15:40,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:15:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:15:40,483 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:15:40,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 02:15:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:41,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-13 02:15:41,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:15:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-13 02:15:42,921 INFO L328 TraceCheckSpWp]: Computing backward predicates...