./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Primes.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/Primes.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 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:11:38,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:11:38,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:11:38,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:11:38,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:11:38,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:11:38,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:11:38,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:11:38,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:11:38,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:11:38,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:11:38,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:11:38,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:11:38,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:11:38,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:11:38,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:11:38,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:11:38,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:11:38,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:11:38,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:11:38,616 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:11:38,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:11:38,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:11:38,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:11:38,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:11:38,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:11:38,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:11:38,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:11:38,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:11:38,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:11:38,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:11:38,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:11:38,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:11:38,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:11:38,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:11:38,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:11:38,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:11:38,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:11:38,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:11:38,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:11:38,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:11:38,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:11:38,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:11:38,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:11:38,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:11:38,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:11:38,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:11:38,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:11:38,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:11:38,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:11:38,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:11:38,669 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:11:38,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:11:38,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:11:38,670 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:11:38,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:11:38,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:11:38,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:11:38,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:11:38,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:11:38,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:11:38,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:11:38,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:11:38,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:11:38,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:11:38,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:11:38,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:11:38,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:11:38,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:11:38,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:11:38,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2022-07-13 02:11:38,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:11:38,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:11:38,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:11:38,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:11:38,897 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:11:38,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Primes.c [2022-07-13 02:11:38,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1050454/319ab8095ef94998ad58eced204de778/FLAGa7937d385 [2022-07-13 02:11:39,310 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:11:39,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c [2022-07-13 02:11:39,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1050454/319ab8095ef94998ad58eced204de778/FLAGa7937d385 [2022-07-13 02:11:39,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1050454/319ab8095ef94998ad58eced204de778 [2022-07-13 02:11:39,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:11:39,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:11:39,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:11:39,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:11:39,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:11:39,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd98d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39, skipping insertion in model container [2022-07-13 02:11:39,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:11:39,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:11:39,518 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/Primes.c[2190,2203] [2022-07-13 02:11:39,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:11:39,526 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:11:39,555 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/Primes.c[2190,2203] [2022-07-13 02:11:39,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:11:39,568 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:11:39,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39 WrapperNode [2022-07-13 02:11:39,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:11:39,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:11:39,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:11:39,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:11:39,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,604 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-07-13 02:11:39,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:11:39,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:11:39,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:11:39,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:11:39,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:11:39,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:11:39,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:11:39,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:11:39,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (1/1) ... [2022-07-13 02:11:39,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:11:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:39,664 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 02:11:39,680 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 02:11:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2022-07-13 02:11:39,691 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2022-07-13 02:11:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:11:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-13 02:11:39,691 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-13 02:11:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2022-07-13 02:11:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2022-07-13 02:11:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:11:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:11:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:11:39,738 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:11:39,739 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:11:39,918 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:11:39,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:11:39,925 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 02:11:39,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:39 BoogieIcfgContainer [2022-07-13 02:11:39,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:11:39,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:11:39,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:11:39,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:11:39,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:11:39" (1/3) ... [2022-07-13 02:11:39,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e186817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:39, skipping insertion in model container [2022-07-13 02:11:39,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:39" (2/3) ... [2022-07-13 02:11:39,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e186817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:39, skipping insertion in model container [2022-07-13 02:11:39,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:39" (3/3) ... [2022-07-13 02:11:39,934 INFO L111 eAbstractionObserver]: Analyzing ICFG Primes.c [2022-07-13 02:11:39,947 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:11:39,947 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-07-13 02:11:39,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:11:40,000 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@1e1cb00b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@130454f [2022-07-13 02:11:40,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-07-13 02:11:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-13 02:11:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 02:11:40,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 02:11:40,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2957412, now seen corresponding path program 1 times [2022-07-13 02:11:40,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630392274] [2022-07-13 02:11:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,176 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 02:11:40,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630392274] [2022-07-13 02:11:40,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630392274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:40,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:40,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:11:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733995597] [2022-07-13 02:11:40,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:11:40,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:11:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:11:40,212 INFO L87 Difference]: Start difference. First operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,255 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2022-07-13 02:11:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:11:40,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-13 02:11:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,263 INFO L225 Difference]: With dead ends: 89 [2022-07-13 02:11:40,270 INFO L226 Difference]: Without dead ends: 76 [2022-07-13 02:11:40,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:11:40,278 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 187 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-13 02:11:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-07-13 02:11:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 64 states have internal predecessors, (76), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 02:11:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2022-07-13 02:11:40,320 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 4 [2022-07-13 02:11:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,320 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2022-07-13 02:11:40,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2022-07-13 02:11:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:11:40,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:11:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:11:40,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash 91679879, now seen corresponding path program 1 times [2022-07-13 02:11:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857996306] [2022-07-13 02:11:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,355 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 02:11:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857996306] [2022-07-13 02:11:40,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857996306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:40,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:40,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:11:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218315368] [2022-07-13 02:11:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:11:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:11:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:11:40,359 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,369 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-07-13 02:11:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:11:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-13 02:11:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,370 INFO L225 Difference]: With dead ends: 76 [2022-07-13 02:11:40,371 INFO L226 Difference]: Without dead ends: 75 [2022-07-13 02:11:40,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:11:40,373 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-13 02:11:40,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-07-13 02:11:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.530612244897959) internal successors, (75), 63 states have internal predecessors, (75), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 02:11:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-07-13 02:11:40,383 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 5 [2022-07-13 02:11:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,384 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-07-13 02:11:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-07-13 02:11:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 02:11:40,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:11:40,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1790314255, now seen corresponding path program 1 times [2022-07-13 02:11:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055441819] [2022-07-13 02:11:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,421 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 02:11:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055441819] [2022-07-13 02:11:40,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055441819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:40,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:40,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465659004] [2022-07-13 02:11:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:40,424 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:40,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,486 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2022-07-13 02:11:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:11:40,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-13 02:11:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,488 INFO L225 Difference]: With dead ends: 139 [2022-07-13 02:11:40,489 INFO L226 Difference]: Without dead ends: 70 [2022-07-13 02:11:40,490 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 02:11:40,490 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 43 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 241 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-13 02:11:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-07-13 02:11:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 02:11:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-07-13 02:11:40,499 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 15 [2022-07-13 02:11:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,499 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-07-13 02:11:40,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-07-13 02:11:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:11:40,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:40,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:11:40,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash -334825923, now seen corresponding path program 1 times [2022-07-13 02:11:40,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577688905] [2022-07-13 02:11:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,570 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 02:11:40,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577688905] [2022-07-13 02:11:40,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577688905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:40,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:40,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466573799] [2022-07-13 02:11:40,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:40,572 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 02:11:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,654 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2022-07-13 02:11:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:40,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2022-07-13 02:11:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,655 INFO L225 Difference]: With dead ends: 145 [2022-07-13 02:11:40,655 INFO L226 Difference]: Without dead ends: 83 [2022-07-13 02:11:40,656 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 02:11:40,657 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 31 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 267 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-13 02:11:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2022-07-13 02:11:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 66 states have internal predecessors, (78), 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 02:11:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-07-13 02:11:40,674 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 16 [2022-07-13 02:11:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-07-13 02:11:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 02:11:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2022-07-13 02:11:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 02:11:40,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:11:40,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 355054241, now seen corresponding path program 1 times [2022-07-13 02:11:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991081807] [2022-07-13 02:11:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,727 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 02:11:40,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991081807] [2022-07-13 02:11:40,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991081807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:40,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:40,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:11:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610438081] [2022-07-13 02:11:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:11:40,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:11:40,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:11:40,733 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 02:11:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:40,846 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2022-07-13 02:11:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:11:40,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 18 [2022-07-13 02:11:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:40,858 INFO L225 Difference]: With dead ends: 107 [2022-07-13 02:11:40,858 INFO L226 Difference]: Without dead ends: 106 [2022-07-13 02:11:40,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:11:40,862 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 44 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:40,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 310 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-13 02:11:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-07-13 02:11:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.4) internal successors, (105), 86 states have internal predecessors, (105), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-13 02:11:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2022-07-13 02:11:40,875 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 18 [2022-07-13 02:11:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:40,875 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2022-07-13 02:11:40,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 02:11:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2022-07-13 02:11:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:11:40,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:40,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:40,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:11:40,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1880405543, now seen corresponding path program 1 times [2022-07-13 02:11:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:40,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923523677] [2022-07-13 02:11:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:40,965 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 02:11:40,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923523677] [2022-07-13 02:11:40,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923523677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:40,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:40,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 02:11:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872405327] [2022-07-13 02:11:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:40,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:11:40,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:11:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:11:40,966 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 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 02:11:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:41,012 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2022-07-13 02:11:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:11:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 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 19 [2022-07-13 02:11:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:41,014 INFO L225 Difference]: With dead ends: 136 [2022-07-13 02:11:41,014 INFO L226 Difference]: Without dead ends: 106 [2022-07-13 02:11:41,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:11:41,028 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:41,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 463 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:41,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-13 02:11:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-07-13 02:11:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 86 states have internal predecessors, (103), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-13 02:11:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2022-07-13 02:11:41,035 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 19 [2022-07-13 02:11:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:41,035 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-07-13 02:11:41,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 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 02:11:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2022-07-13 02:11:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:11:41,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:41,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:11:41,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1878220355, now seen corresponding path program 1 times [2022-07-13 02:11:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:41,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516500346] [2022-07-13 02:11:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,099 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 02:11:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516500346] [2022-07-13 02:11:41,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516500346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:41,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:41,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:11:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175599153] [2022-07-13 02:11:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:41,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:11:41,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:11:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:11:41,102 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 02:11:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:41,176 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2022-07-13 02:11:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:11:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 19 [2022-07-13 02:11:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:41,177 INFO L225 Difference]: With dead ends: 106 [2022-07-13 02:11:41,177 INFO L226 Difference]: Without dead ends: 105 [2022-07-13 02:11:41,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:11:41,181 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:41,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 279 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-13 02:11:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2022-07-13 02:11:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 86 states have internal predecessors, (101), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-13 02:11:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2022-07-13 02:11:41,205 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 19 [2022-07-13 02:11:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:41,205 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2022-07-13 02:11:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 02:11:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2022-07-13 02:11:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 02:11:41,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:41,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:41,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 02:11:41,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1361525461, now seen corresponding path program 1 times [2022-07-13 02:11:41,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:41,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680699803] [2022-07-13 02:11:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,250 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 02:11:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:41,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680699803] [2022-07-13 02:11:41,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680699803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:41,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:41,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717380814] [2022-07-13 02:11:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:41,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:41,252 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 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 02:11:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:41,302 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2022-07-13 02:11:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:41,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 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 20 [2022-07-13 02:11:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:41,307 INFO L225 Difference]: With dead ends: 143 [2022-07-13 02:11:41,308 INFO L226 Difference]: Without dead ends: 119 [2022-07-13 02:11:41,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 02:11:41,309 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 28 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:41,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 287 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-13 02:11:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2022-07-13 02:11:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 94 states have internal predecessors, (112), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 02:11:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-07-13 02:11:41,335 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 20 [2022-07-13 02:11:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:41,335 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-07-13 02:11:41,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 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 02:11:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-07-13 02:11:41,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 02:11:41,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:41,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 02:11:41,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1538837383, now seen corresponding path program 1 times [2022-07-13 02:11:41,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:41,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956400232] [2022-07-13 02:11:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,371 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 02:11:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:41,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956400232] [2022-07-13 02:11:41,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956400232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:41,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:41,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444259815] [2022-07-13 02:11:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:41,378 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 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 02:11:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:41,434 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2022-07-13 02:11:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:41,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 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 22 [2022-07-13 02:11:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:41,440 INFO L225 Difference]: With dead ends: 137 [2022-07-13 02:11:41,440 INFO L226 Difference]: Without dead ends: 135 [2022-07-13 02:11:41,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 02:11:41,441 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 41 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:41,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 258 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-13 02:11:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2022-07-13 02:11:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 106 states have internal predecessors, (130), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-13 02:11:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2022-07-13 02:11:41,447 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 22 [2022-07-13 02:11:41,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:41,448 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2022-07-13 02:11:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 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 02:11:41,448 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2022-07-13 02:11:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 02:11:41,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:41,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 02:11:41,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1613355843, now seen corresponding path program 1 times [2022-07-13 02:11:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:41,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478826180] [2022-07-13 02:11:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,513 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 02:11:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:41,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478826180] [2022-07-13 02:11:41,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478826180] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:41,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523505255] [2022-07-13 02:11:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:41,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:41,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:41,528 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 02:11:41,529 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 02:11:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:41,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:11:41,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:41,775 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 02:11:41,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:41,907 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 02:11:41,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523505255] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:41,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:41,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2022-07-13 02:11:41,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773180981] [2022-07-13 02:11:41,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:41,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 02:11:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 02:11:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-07-13 02:11:41,909 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:42,321 INFO L93 Difference]: Finished difference Result 276 states and 348 transitions. [2022-07-13 02:11:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 02:11:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 02:11:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:42,325 INFO L225 Difference]: With dead ends: 276 [2022-07-13 02:11:42,326 INFO L226 Difference]: Without dead ends: 167 [2022-07-13 02:11:42,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 02:11:42,328 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 272 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:42,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 579 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:11:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-13 02:11:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 154. [2022-07-13 02:11:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 126 states have internal predecessors, (155), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-13 02:11:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 190 transitions. [2022-07-13 02:11:42,343 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 190 transitions. Word has length 24 [2022-07-13 02:11:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:42,343 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 190 transitions. [2022-07-13 02:11:42,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 190 transitions. [2022-07-13 02:11:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 02:11:42,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:42,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:42,366 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 02:11:42,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 02:11:42,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash 48447777, now seen corresponding path program 1 times [2022-07-13 02:11:42,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:42,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125118302] [2022-07-13 02:11:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:42,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:11:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125118302] [2022-07-13 02:11:42,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125118302] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:42,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175305068] [2022-07-13 02:11:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:42,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:42,613 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 02:11:42,614 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 02:11:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:42,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:11:42,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:42,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:11:42,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175305068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:42,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:11:42,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2022-07-13 02:11:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731144133] [2022-07-13 02:11:42,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 02:11:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 02:11:42,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:42,749 INFO L87 Difference]: Start difference. First operand 154 states and 190 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 02:11:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:42,897 INFO L93 Difference]: Finished difference Result 256 states and 316 transitions. [2022-07-13 02:11:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 02:11:42,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 26 [2022-07-13 02:11:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:42,899 INFO L225 Difference]: With dead ends: 256 [2022-07-13 02:11:42,899 INFO L226 Difference]: Without dead ends: 199 [2022-07-13 02:11:42,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:11:42,901 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 61 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:42,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 464 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-13 02:11:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2022-07-13 02:11:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 151 states have (on average 1.2847682119205297) internal successors, (194), 159 states have internal predecessors, (194), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 02:11:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2022-07-13 02:11:42,913 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 26 [2022-07-13 02:11:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:42,913 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2022-07-13 02:11:42,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 02:11:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2022-07-13 02:11:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 02:11:42,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:42,915 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:42,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:43,128 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,SelfDestructingSolverStorable10 [2022-07-13 02:11:43,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:43,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2143137265, now seen corresponding path program 1 times [2022-07-13 02:11:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:43,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182437696] [2022-07-13 02:11:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:43,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,172 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 02:11:43,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:43,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182437696] [2022-07-13 02:11:43,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182437696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:43,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:11:43,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:11:43,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534829032] [2022-07-13 02:11:43,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:43,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:11:43,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:11:43,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:11:43,175 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:11:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:43,219 INFO L93 Difference]: Finished difference Result 221 states and 274 transitions. [2022-07-13 02:11:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:11:43,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-07-13 02:11:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:43,222 INFO L225 Difference]: With dead ends: 221 [2022-07-13 02:11:43,222 INFO L226 Difference]: Without dead ends: 219 [2022-07-13 02:11:43,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 02:11:43,222 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:43,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-13 02:11:43,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 210. [2022-07-13 02:11:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 171 states have internal predecessors, (210), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-13 02:11:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 259 transitions. [2022-07-13 02:11:43,233 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 259 transitions. Word has length 27 [2022-07-13 02:11:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:43,234 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 259 transitions. [2022-07-13 02:11:43,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:11:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 259 transitions. [2022-07-13 02:11:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 02:11:43,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:43,238 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 02:11:43,238 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1537468884, now seen corresponding path program 1 times [2022-07-13 02:11:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:43,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331153407] [2022-07-13 02:11:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:43,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:43,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:43,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331153407] [2022-07-13 02:11:43,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331153407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:43,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099490987] [2022-07-13 02:11:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:43,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:43,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:43,314 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 02:11:43,324 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 02:11:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:11:43,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:43,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:43,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099490987] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:43,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:43,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-07-13 02:11:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303538212] [2022-07-13 02:11:43,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:43,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:11:43,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:43,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:11:43,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:11:43,417 INFO L87 Difference]: Start difference. First operand 210 states and 259 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:11:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:43,471 INFO L93 Difference]: Finished difference Result 224 states and 274 transitions. [2022-07-13 02:11:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:11:43,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-07-13 02:11:43,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:43,472 INFO L225 Difference]: With dead ends: 224 [2022-07-13 02:11:43,472 INFO L226 Difference]: Without dead ends: 176 [2022-07-13 02:11:43,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:43,473 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 91 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:43,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 351 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-13 02:11:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2022-07-13 02:11:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 135 states have (on average 1.237037037037037) internal successors, (167), 140 states have internal predecessors, (167), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 02:11:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2022-07-13 02:11:43,480 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 32 [2022-07-13 02:11:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:43,481 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2022-07-13 02:11:43,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:11:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2022-07-13 02:11:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 02:11:43,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:43,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:43,500 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 02:11:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:43,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:43,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash -118239160, now seen corresponding path program 1 times [2022-07-13 02:11:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193649370] [2022-07-13 02:11:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:11:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:43,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:43,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193649370] [2022-07-13 02:11:43,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193649370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:43,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207203497] [2022-07-13 02:11:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:43,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:43,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:43,739 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 02:11:43,741 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 02:11:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:43,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:11:43,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:43,840 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 02:11:43,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:43,872 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 02:11:43,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207203497] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:43,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:43,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-07-13 02:11:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015245067] [2022-07-13 02:11:43,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:43,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 02:11:43,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 02:11:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:43,874 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:11:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:43,982 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2022-07-13 02:11:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:11:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-07-13 02:11:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:43,984 INFO L225 Difference]: With dead ends: 186 [2022-07-13 02:11:43,984 INFO L226 Difference]: Without dead ends: 174 [2022-07-13 02:11:43,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:11:43,985 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:43,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 657 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-13 02:11:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2022-07-13 02:11:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 140 states have internal predecessors, (166), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 02:11:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2022-07-13 02:11:43,991 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 31 [2022-07-13 02:11:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:43,992 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2022-07-13 02:11:43,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:11:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2022-07-13 02:11:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 02:11:43,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:43,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:44,009 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 02:11:44,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:44,204 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:44,205 INFO L85 PathProgramCache]: Analyzing trace with hash 644683350, now seen corresponding path program 1 times [2022-07-13 02:11:44,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:44,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125653604] [2022-07-13 02:11:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:44,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:11:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:44,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:44,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125653604] [2022-07-13 02:11:44,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125653604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:44,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41891106] [2022-07-13 02:11:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:44,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:44,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:44,254 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 02:11:44,259 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 02:11:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:11:44,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:44,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:44,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41891106] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:44,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:44,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-13 02:11:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55333633] [2022-07-13 02:11:44,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:44,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 02:11:44,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 02:11:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:44,367 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:11:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:44,422 INFO L93 Difference]: Finished difference Result 182 states and 217 transitions. [2022-07-13 02:11:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:11:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-07-13 02:11:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:44,424 INFO L225 Difference]: With dead ends: 182 [2022-07-13 02:11:44,424 INFO L226 Difference]: Without dead ends: 181 [2022-07-13 02:11:44,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 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 02:11:44,426 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 33 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:44,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 516 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-13 02:11:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2022-07-13 02:11:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 144 states have internal predecessors, (171), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2022-07-13 02:11:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 212 transitions. [2022-07-13 02:11:44,434 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 212 transitions. Word has length 32 [2022-07-13 02:11:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:44,434 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 212 transitions. [2022-07-13 02:11:44,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:11:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 212 transitions. [2022-07-13 02:11:44,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 02:11:44,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:44,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:44,450 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 02:11:44,643 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,SelfDestructingSolverStorable14 [2022-07-13 02:11:44,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1489652536, now seen corresponding path program 1 times [2022-07-13 02:11:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:44,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185347052] [2022-07-13 02:11:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:44,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:11:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:44,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:44,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185347052] [2022-07-13 02:11:44,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185347052] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:44,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863504568] [2022-07-13 02:11:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:44,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:44,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:44,709 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 02:11:44,710 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 02:11:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:11:44,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:44,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:44,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863504568] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:44,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:44,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-13 02:11:44,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166401658] [2022-07-13 02:11:44,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:44,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 02:11:44,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 02:11:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:44,828 INFO L87 Difference]: Start difference. First operand 178 states and 212 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:11:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:44,903 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2022-07-13 02:11:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:11:44,904 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2022-07-13 02:11:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:44,905 INFO L225 Difference]: With dead ends: 180 [2022-07-13 02:11:44,905 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 02:11:44,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:11:44,906 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 43 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:44,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 461 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 02:11:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2022-07-13 02:11:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.2116788321167884) internal successors, (166), 141 states have internal predecessors, (166), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-13 02:11:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 206 transitions. [2022-07-13 02:11:44,924 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 206 transitions. Word has length 33 [2022-07-13 02:11:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:44,924 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 206 transitions. [2022-07-13 02:11:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 02:11:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 206 transitions. [2022-07-13 02:11:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 02:11:44,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:44,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:44,943 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 02:11:45,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 02:11:45,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1385978691, now seen corresponding path program 1 times [2022-07-13 02:11:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:45,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034842617] [2022-07-13 02:11:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:45,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:45,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034842617] [2022-07-13 02:11:45,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034842617] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:45,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379249251] [2022-07-13 02:11:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:45,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:45,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:45,228 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 02:11:45,246 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 02:11:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:45,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 02:11:45,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:45,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:45,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379249251] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:45,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:45,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2022-07-13 02:11:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886529164] [2022-07-13 02:11:45,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:45,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 02:11:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 02:11:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:11:45,524 INFO L87 Difference]: Start difference. First operand 174 states and 206 transitions. Second operand has 18 states, 16 states have (on average 3.1875) internal successors, (51), 11 states have internal predecessors, (51), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:45,770 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2022-07-13 02:11:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 02:11:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.1875) internal successors, (51), 11 states have internal predecessors, (51), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-13 02:11:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:45,772 INFO L225 Difference]: With dead ends: 299 [2022-07-13 02:11:45,772 INFO L226 Difference]: Without dead ends: 160 [2022-07-13 02:11:45,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-07-13 02:11:45,773 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 133 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:45,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 500 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:11:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-13 02:11:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2022-07-13 02:11:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 123 states have internal predecessors, (140), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2022-07-13 02:11:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2022-07-13 02:11:45,779 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 35 [2022-07-13 02:11:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:45,779 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2022-07-13 02:11:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.1875) internal successors, (51), 11 states have internal predecessors, (51), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2022-07-13 02:11:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 02:11:45,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:45,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:45,815 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 02:11:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:45,996 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:45,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1095335930, now seen corresponding path program 1 times [2022-07-13 02:11:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:45,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177523271] [2022-07-13 02:11:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:46,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:46,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177523271] [2022-07-13 02:11:46,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177523271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424703616] [2022-07-13 02:11:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:46,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:46,028 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 02:11:46,029 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 02:11:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:46,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 02:11:46,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:46,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:46,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424703616] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:46,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:46,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 02:11:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777071920] [2022-07-13 02:11:46,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:46,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:11:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:46,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:11:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:11:46,088 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:46,149 INFO L93 Difference]: Finished difference Result 291 states and 349 transitions. [2022-07-13 02:11:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:11:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-13 02:11:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:46,151 INFO L225 Difference]: With dead ends: 291 [2022-07-13 02:11:46,151 INFO L226 Difference]: Without dead ends: 173 [2022-07-13 02:11:46,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:11:46,152 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 36 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:46,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 378 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-13 02:11:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2022-07-13 02:11:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 132 states have internal predecessors, (151), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-07-13 02:11:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2022-07-13 02:11:46,160 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 38 [2022-07-13 02:11:46,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:46,161 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2022-07-13 02:11:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2022-07-13 02:11:46,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-13 02:11:46,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:46,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:46,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:46,375 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,SelfDestructingSolverStorable17 [2022-07-13 02:11:46,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:46,376 INFO L85 PathProgramCache]: Analyzing trace with hash -350622166, now seen corresponding path program 1 times [2022-07-13 02:11:46,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:46,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486769971] [2022-07-13 02:11:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:11:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486769971] [2022-07-13 02:11:46,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486769971] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415189545] [2022-07-13 02:11:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:46,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:46,424 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 02:11:46,436 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 02:11:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:46,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:11:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:46,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:11:46,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415189545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:46,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:11:46,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2022-07-13 02:11:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679371940] [2022-07-13 02:11:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:11:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:11:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:11:46,549 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:46,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:46,663 INFO L93 Difference]: Finished difference Result 189 states and 218 transitions. [2022-07-13 02:11:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:11:46,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-07-13 02:11:46,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:46,665 INFO L225 Difference]: With dead ends: 189 [2022-07-13 02:11:46,665 INFO L226 Difference]: Without dead ends: 188 [2022-07-13 02:11:46,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:11:46,666 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 88 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:46,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 192 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-13 02:11:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 178. [2022-07-13 02:11:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.177304964539007) internal successors, (166), 144 states have internal predecessors, (166), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-13 02:11:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2022-07-13 02:11:46,673 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 40 [2022-07-13 02:11:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:46,673 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2022-07-13 02:11:46,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2022-07-13 02:11:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 02:11:46,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:46,674 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:46,696 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 02:11:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:46,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:46,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2015614804, now seen corresponding path program 1 times [2022-07-13 02:11:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:46,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079993788] [2022-07-13 02:11:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079993788] [2022-07-13 02:11:46,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079993788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971305746] [2022-07-13 02:11:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:46,983 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 02:11:46,985 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 02:11:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 02:11:47,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:47,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:11:47,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971305746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:11:47,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:11:47,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2022-07-13 02:11:47,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145375218] [2022-07-13 02:11:47,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:11:47,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:11:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:11:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:11:47,198 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:47,332 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2022-07-13 02:11:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:11:47,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-13 02:11:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:47,334 INFO L225 Difference]: With dead ends: 185 [2022-07-13 02:11:47,334 INFO L226 Difference]: Without dead ends: 184 [2022-07-13 02:11:47,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-07-13 02:11:47,334 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 74 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:47,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 301 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-13 02:11:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2022-07-13 02:11:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.1702127659574468) internal successors, (165), 144 states have internal predecessors, (165), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-07-13 02:11:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2022-07-13 02:11:47,341 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 41 [2022-07-13 02:11:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:47,341 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2022-07-13 02:11:47,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2022-07-13 02:11:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 02:11:47,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:47,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:47,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:47,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:47,542 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:47,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash 287216546, now seen corresponding path program 1 times [2022-07-13 02:11:47,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:47,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286055338] [2022-07-13 02:11:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:47,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:11:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:47,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:47,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286055338] [2022-07-13 02:11:47,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286055338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:47,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461210197] [2022-07-13 02:11:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:47,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:47,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:47,601 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 02:11:47,623 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 02:11:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:47,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:11:47,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:47,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:11:47,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461210197] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:47,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:47,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-13 02:11:47,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665560580] [2022-07-13 02:11:47,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:11:47,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:11:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:11:47,846 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-13 02:11:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:47,992 INFO L93 Difference]: Finished difference Result 193 states and 223 transitions. [2022-07-13 02:11:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:11:47,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 44 [2022-07-13 02:11:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:47,994 INFO L225 Difference]: With dead ends: 193 [2022-07-13 02:11:47,994 INFO L226 Difference]: Without dead ends: 188 [2022-07-13 02:11:47,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-07-13 02:11:47,994 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 81 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:47,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 697 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:11:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-13 02:11:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-07-13 02:11:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.1610738255033557) internal successors, (173), 152 states have internal predecessors, (173), 20 states have call successors, (20), 13 states have call predecessors, (20), 15 states have return successors, (22), 22 states have call predecessors, (22), 19 states have call successors, (22) [2022-07-13 02:11:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2022-07-13 02:11:48,002 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 44 [2022-07-13 02:11:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:48,002 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2022-07-13 02:11:48,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-13 02:11:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2022-07-13 02:11:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 02:11:48,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:48,003 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:48,021 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 02:11:48,219 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,SelfDestructingSolverStorable20 [2022-07-13 02:11:48,219 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1599875706, now seen corresponding path program 2 times [2022-07-13 02:11:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11461158] [2022-07-13 02:11:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:11:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11461158] [2022-07-13 02:11:48,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11461158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334097610] [2022-07-13 02:11:48,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:11:48,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:48,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:48,317 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 02:11:48,318 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 02:11:48,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:11:48,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:48,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 02:11:48,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:48,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:11:48,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334097610] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:48,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:48,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2022-07-13 02:11:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301892115] [2022-07-13 02:11:48,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:48,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 02:11:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 02:11:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 02:11:48,768 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:50,868 INFO L93 Difference]: Finished difference Result 323 states and 382 transitions. [2022-07-13 02:11:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-13 02:11:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-13 02:11:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:50,870 INFO L225 Difference]: With dead ends: 323 [2022-07-13 02:11:50,870 INFO L226 Difference]: Without dead ends: 321 [2022-07-13 02:11:50,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1376, Invalid=6280, Unknown=0, NotChecked=0, Total=7656 [2022-07-13 02:11:50,872 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 749 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:50,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 916 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 02:11:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-13 02:11:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 294. [2022-07-13 02:11:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 236 states have (on average 1.1228813559322033) internal successors, (265), 237 states have internal predecessors, (265), 33 states have call successors, (33), 21 states have call predecessors, (33), 23 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) [2022-07-13 02:11:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 333 transitions. [2022-07-13 02:11:50,883 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 333 transitions. Word has length 46 [2022-07-13 02:11:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:50,884 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 333 transitions. [2022-07-13 02:11:50,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:11:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 333 transitions. [2022-07-13 02:11:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 02:11:50,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:50,884 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:50,902 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 02:11:51,098 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,SelfDestructingSolverStorable21 [2022-07-13 02:11:51,098 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2078564830, now seen corresponding path program 2 times [2022-07-13 02:11:51,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:51,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344949488] [2022-07-13 02:11:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:51,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:11:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 02:11:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:51,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344949488] [2022-07-13 02:11:51,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344949488] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:51,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961775858] [2022-07-13 02:11:51,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:11:51,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:51,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:51,284 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 02:11:51,288 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 02:11:51,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:11:51,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:51,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:11:51,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 02:11:51,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 02:11:52,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961775858] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:52,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:52,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2022-07-13 02:11:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865654453] [2022-07-13 02:11:52,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:52,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 02:11:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 02:11:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:11:52,041 INFO L87 Difference]: Start difference. First operand 294 states and 333 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-13 02:11:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:52,406 INFO L93 Difference]: Finished difference Result 323 states and 369 transitions. [2022-07-13 02:11:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 02:11:52,406 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 68 [2022-07-13 02:11:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:52,408 INFO L225 Difference]: With dead ends: 323 [2022-07-13 02:11:52,408 INFO L226 Difference]: Without dead ends: 314 [2022-07-13 02:11:52,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2022-07-13 02:11:52,409 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 176 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:52,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 851 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-13 02:11:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-13 02:11:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 252 states have (on average 1.1150793650793651) internal successors, (281), 253 states have internal predecessors, (281), 33 states have call successors, (33), 21 states have call predecessors, (33), 27 states have return successors, (39), 39 states have call predecessors, (39), 32 states have call successors, (39) [2022-07-13 02:11:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 353 transitions. [2022-07-13 02:11:52,427 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 353 transitions. Word has length 68 [2022-07-13 02:11:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:52,427 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 353 transitions. [2022-07-13 02:11:52,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-13 02:11:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 353 transitions. [2022-07-13 02:11:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 02:11:52,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:52,428 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:52,453 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 02:11:52,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-13 02:11:52,644 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash -153968340, now seen corresponding path program 1 times [2022-07-13 02:11:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:52,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060422351] [2022-07-13 02:11:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:52,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 02:11:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 02:11:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 02:11:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 02:11:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 02:11:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060422351] [2022-07-13 02:11:52,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060422351] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834428784] [2022-07-13 02:11:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:52,747 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 02:11:52,748 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 02:11:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:52,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 02:11:52,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:11:52,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:11:53,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834428784] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:53,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:53,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 24 [2022-07-13 02:11:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669370370] [2022-07-13 02:11:53,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 02:11:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 02:11:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-07-13 02:11:53,694 INFO L87 Difference]: Start difference. First operand 314 states and 353 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2022-07-13 02:11:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:53,903 INFO L93 Difference]: Finished difference Result 522 states and 598 transitions. [2022-07-13 02:11:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 02:11:53,904 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 78 [2022-07-13 02:11:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:53,905 INFO L225 Difference]: With dead ends: 522 [2022-07-13 02:11:53,905 INFO L226 Difference]: Without dead ends: 74 [2022-07-13 02:11:53,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 02:11:53,906 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 124 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:53,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 467 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:11:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-13 02:11:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-13 02:11:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 02:11:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2022-07-13 02:11:53,909 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 78 [2022-07-13 02:11:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:53,909 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2022-07-13 02:11:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 23 states have internal predecessors, (128), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2022-07-13 02:11:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2022-07-13 02:11:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-13 02:11:53,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:53,909 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:53,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-13 02:11:54,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:54,123 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1185635234, now seen corresponding path program 3 times [2022-07-13 02:11:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121721679] [2022-07-13 02:11:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 02:11:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 02:11:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:54,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121721679] [2022-07-13 02:11:54,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121721679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:54,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031356630] [2022-07-13 02:11:54,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:11:54,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:54,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:54,474 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 02:11:54,475 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 02:11:54,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-13 02:11:54,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:54,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-13 02:11:54,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 02:11:54,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:58,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031356630] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:58,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:11:58,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-07-13 02:11:58,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545550807] [2022-07-13 02:11:58,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:58,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 02:11:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 02:11:58,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1112, Unknown=1, NotChecked=0, Total=1260 [2022-07-13 02:11:58,685 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 02:11:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:59,363 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-07-13 02:11:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 02:11:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) Word has length 130 [2022-07-13 02:11:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:59,364 INFO L225 Difference]: With dead ends: 83 [2022-07-13 02:11:59,364 INFO L226 Difference]: Without dead ends: 80 [2022-07-13 02:11:59,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=354, Invalid=2401, Unknown=1, NotChecked=0, Total=2756 [2022-07-13 02:11:59,365 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 105 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:59,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 581 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:11:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-13 02:11:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-07-13 02:11:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 11 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 02:11:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-07-13 02:11:59,368 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 130 [2022-07-13 02:11:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:59,368 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-07-13 02:11:59,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 02:11:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-07-13 02:11:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 02:11:59,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:59,369 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:59,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 02:11:59,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:59,571 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:11:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1601731370, now seen corresponding path program 4 times [2022-07-13 02:11:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218063660] [2022-07-13 02:11:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:11:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 02:11:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:11:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 02:11:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:59,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218063660] [2022-07-13 02:11:59,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218063660] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:59,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334813902] [2022-07-13 02:11:59,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:11:59,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:59,936 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 02:11:59,945 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 02:12:00,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:12:00,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:00,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-13 02:12:00,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 02:12:00,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:02,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334813902] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:02,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:02,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2022-07-13 02:12:02,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516537333] [2022-07-13 02:12:02,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:02,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 02:12:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 02:12:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 02:12:02,653 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 02:12:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:03,400 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2022-07-13 02:12:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 02:12:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) Word has length 142 [2022-07-13 02:12:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:03,401 INFO L225 Difference]: With dead ends: 88 [2022-07-13 02:12:03,401 INFO L226 Difference]: Without dead ends: 85 [2022-07-13 02:12:03,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 152 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=394, Invalid=2912, Unknown=0, NotChecked=0, Total=3306 [2022-07-13 02:12:03,403 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 146 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:03,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 717 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:12:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-13 02:12:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-07-13 02:12:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 12 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 02:12:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2022-07-13 02:12:03,407 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 142 [2022-07-13 02:12:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2022-07-13 02:12:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 02:12:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2022-07-13 02:12:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 02:12:03,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:03,410 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:03,429 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 02:12:03,624 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,SelfDestructingSolverStorable25 [2022-07-13 02:12:03,625 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1100547618, now seen corresponding path program 5 times [2022-07-13 02:12:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:03,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624170799] [2022-07-13 02:12:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 02:12:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-13 02:12:04,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:04,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624170799] [2022-07-13 02:12:04,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624170799] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:04,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968191309] [2022-07-13 02:12:04,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:12:04,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:04,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:04,092 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 02:12:04,094 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 02:12:04,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-07-13 02:12:04,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:04,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-13 02:12:04,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-13 02:12:04,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:06,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968191309] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:06,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:06,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2022-07-13 02:12:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600286834] [2022-07-13 02:12:06,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:06,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-13 02:12:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-13 02:12:06,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 02:12:06,243 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 02:12:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:07,134 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2022-07-13 02:12:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 02:12:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-13 02:12:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:07,135 INFO L225 Difference]: With dead ends: 93 [2022-07-13 02:12:07,135 INFO L226 Difference]: Without dead ends: 90 [2022-07-13 02:12:07,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 161 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2022-07-13 02:12:07,136 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 160 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:07,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 793 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:12:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-13 02:12:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-07-13 02:12:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 13 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 02:12:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-07-13 02:12:07,138 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 154 [2022-07-13 02:12:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:07,138 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-07-13 02:12:07,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 02:12:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-07-13 02:12:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 02:12:07,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:07,139 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:07,161 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 02:12:07,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-13 02:12:07,340 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:07,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash -583518762, now seen corresponding path program 6 times [2022-07-13 02:12:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:07,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266223491] [2022-07-13 02:12:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:12:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-13 02:12:07,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:07,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266223491] [2022-07-13 02:12:07,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266223491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:07,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438742804] [2022-07-13 02:12:07,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:12:07,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:07,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:07,872 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 02:12:07,907 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 02:12:08,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-07-13 02:12:08,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:08,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-13 02:12:08,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-13 02:12:08,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:13,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438742804] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:13,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:13,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2022-07-13 02:12:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729329951] [2022-07-13 02:12:13,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:13,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 02:12:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 02:12:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1787, Unknown=1, NotChecked=0, Total=1980 [2022-07-13 02:12:13,988 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-13 02:12:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:15,159 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2022-07-13 02:12:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 02:12:15,159 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) Word has length 152 [2022-07-13 02:12:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:15,163 INFO L225 Difference]: With dead ends: 98 [2022-07-13 02:12:15,163 INFO L226 Difference]: Without dead ends: 95 [2022-07-13 02:12:15,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 158 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=474, Invalid=4081, Unknown=1, NotChecked=0, Total=4556 [2022-07-13 02:12:15,165 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:15,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1024 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:12:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-13 02:12:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-07-13 02:12:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 14 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 02:12:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2022-07-13 02:12:15,167 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 152 [2022-07-13 02:12:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:15,168 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2022-07-13 02:12:15,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-13 02:12:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2022-07-13 02:12:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 02:12:15,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:15,168 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:15,188 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 02:12:15,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-13 02:12:15,386 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1895725022, now seen corresponding path program 7 times [2022-07-13 02:12:15,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:15,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300400740] [2022-07-13 02:12:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:15,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:12:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:12:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:16,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300400740] [2022-07-13 02:12:16,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300400740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:16,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777536674] [2022-07-13 02:12:16,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:12:16,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:16,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:16,038 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 02:12:16,079 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 02:12:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 02:12:16,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-13 02:12:16,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:20,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777536674] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:20,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:20,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2022-07-13 02:12:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910138479] [2022-07-13 02:12:20,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:20,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-13 02:12:20,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-13 02:12:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 02:12:20,879 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 02:12:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:22,117 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2022-07-13 02:12:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 02:12:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-07-13 02:12:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:22,118 INFO L225 Difference]: With dead ends: 103 [2022-07-13 02:12:22,118 INFO L226 Difference]: Without dead ends: 100 [2022-07-13 02:12:22,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 170 SyntacticMatches, 11 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=514, Invalid=4742, Unknown=0, NotChecked=0, Total=5256 [2022-07-13 02:12:22,120 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 143 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:22,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1017 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:12:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-13 02:12:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-07-13 02:12:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 15 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 02:12:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2022-07-13 02:12:22,123 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 164 [2022-07-13 02:12:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:22,124 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2022-07-13 02:12:22,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 02:12:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2022-07-13 02:12:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-13 02:12:22,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:22,125 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:22,146 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 02:12:22,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 02:12:22,346 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1407733590, now seen corresponding path program 8 times [2022-07-13 02:12:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:22,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011975348] [2022-07-13 02:12:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:22,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:12:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-07-13 02:12:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:23,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011975348] [2022-07-13 02:12:23,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011975348] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:23,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541358221] [2022-07-13 02:12:23,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:12:23,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:23,024 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 02:12:23,025 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 02:12:23,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:12:23,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:23,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-13 02:12:23,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-07-13 02:12:24,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:26,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541358221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:26,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:26,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2022-07-13 02:12:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739481068] [2022-07-13 02:12:26,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:26,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-13 02:12:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-13 02:12:26,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 02:12:26,820 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-13 02:12:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:28,222 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2022-07-13 02:12:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 02:12:28,222 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) Word has length 176 [2022-07-13 02:12:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:28,228 INFO L225 Difference]: With dead ends: 108 [2022-07-13 02:12:28,228 INFO L226 Difference]: Without dead ends: 105 [2022-07-13 02:12:28,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 179 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=427, Invalid=5123, Unknown=0, NotChecked=0, Total=5550 [2022-07-13 02:12:28,230 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 199 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:28,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1086 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 02:12:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-13 02:12:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2022-07-13 02:12:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 02:12:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2022-07-13 02:12:28,234 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 176 [2022-07-13 02:12:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:28,234 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2022-07-13 02:12:28,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-13 02:12:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2022-07-13 02:12:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-13 02:12:28,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:28,236 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:28,253 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 02:12:28,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:28,445 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1969189538, now seen corresponding path program 9 times [2022-07-13 02:12:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:28,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589301542] [2022-07-13 02:12:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:12:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-13 02:12:29,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589301542] [2022-07-13 02:12:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589301542] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:29,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855071276] [2022-07-13 02:12:29,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:12:29,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:29,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:29,165 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 02:12:29,167 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 02:12:29,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-13 02:12:29,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:29,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 02:12:29,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-07-13 02:12:30,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:33,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855071276] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:33,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:33,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2022-07-13 02:12:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073180940] [2022-07-13 02:12:33,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 02:12:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 02:12:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2022-07-13 02:12:33,597 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-13 02:12:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:35,162 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2022-07-13 02:12:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-13 02:12:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) Word has length 188 [2022-07-13 02:12:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:35,163 INFO L225 Difference]: With dead ends: 113 [2022-07-13 02:12:35,163 INFO L226 Difference]: Without dead ends: 110 [2022-07-13 02:12:35,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 191 SyntacticMatches, 13 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=458, Invalid=5862, Unknown=0, NotChecked=0, Total=6320 [2022-07-13 02:12:35,165 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 213 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:35,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1101 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 02:12:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-13 02:12:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2022-07-13 02:12:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 17 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 02:12:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2022-07-13 02:12:35,168 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 188 [2022-07-13 02:12:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:35,168 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2022-07-13 02:12:35,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-13 02:12:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2022-07-13 02:12:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-13 02:12:35,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:35,170 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:35,191 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 02:12:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:35,388 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1413173590, now seen corresponding path program 10 times [2022-07-13 02:12:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:35,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289803972] [2022-07-13 02:12:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 02:12:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-13 02:12:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:36,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289803972] [2022-07-13 02:12:36,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289803972] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:36,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087585104] [2022-07-13 02:12:36,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:12:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:36,132 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 02:12:36,133 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 02:12:36,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:12:36,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:36,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 02:12:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-13 02:12:37,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:41,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087585104] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:41,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:41,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2022-07-13 02:12:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194164331] [2022-07-13 02:12:41,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:41,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 02:12:41,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 02:12:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2022-07-13 02:12:41,262 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-13 02:12:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:42,980 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2022-07-13 02:12:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 02:12:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) Word has length 214 [2022-07-13 02:12:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:42,981 INFO L225 Difference]: With dead ends: 118 [2022-07-13 02:12:42,981 INFO L226 Difference]: Without dead ends: 115 [2022-07-13 02:12:42,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=489, Invalid=6651, Unknown=0, NotChecked=0, Total=7140 [2022-07-13 02:12:42,984 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 174 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:42,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1380 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 02:12:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-07-13 02:12:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2022-07-13 02:12:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 02:12:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2022-07-13 02:12:42,988 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 214 [2022-07-13 02:12:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:42,988 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2022-07-13 02:12:42,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2022-07-13 02:12:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2022-07-13 02:12:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-13 02:12:42,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:42,990 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:43,018 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 02:12:43,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:43,208 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1244183842, now seen corresponding path program 11 times [2022-07-13 02:12:43,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:43,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830540657] [2022-07-13 02:12:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:43,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:12:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 739 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-07-13 02:12:44,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830540657] [2022-07-13 02:12:44,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830540657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228103371] [2022-07-13 02:12:44,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:12:44,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:44,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:44,072 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 02:12:44,073 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 02:12:44,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-07-13 02:12:44,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:44,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 02:12:44,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 739 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-07-13 02:12:45,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:12:49,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228103371] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:49,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:12:49,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-07-13 02:12:49,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433056035] [2022-07-13 02:12:49,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:12:49,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-13 02:12:49,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:12:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-13 02:12:49,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 02:12:49,927 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-13 02:12:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:12:51,946 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2022-07-13 02:12:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-13 02:12:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) Word has length 212 [2022-07-13 02:12:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:12:51,947 INFO L225 Difference]: With dead ends: 123 [2022-07-13 02:12:51,947 INFO L226 Difference]: Without dead ends: 120 [2022-07-13 02:12:51,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 215 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=520, Invalid=7490, Unknown=0, NotChecked=0, Total=8010 [2022-07-13 02:12:51,948 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 185 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:12:51,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1577 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 02:12:51,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-13 02:12:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-13 02:12:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (19), 19 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 02:12:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2022-07-13 02:12:51,951 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 212 [2022-07-13 02:12:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:12:51,951 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2022-07-13 02:12:51,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2022-07-13 02:12:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2022-07-13 02:12:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-13 02:12:51,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:12:51,952 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:12:51,970 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 02:12:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:52,168 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:12:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:12:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash -454350122, now seen corresponding path program 12 times [2022-07-13 02:12:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:12:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402328461] [2022-07-13 02:12:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:12:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:12:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:12:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 02:12:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:12:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:12:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 0 proven. 1060 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2022-07-13 02:12:53,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:12:53,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402328461] [2022-07-13 02:12:53,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402328461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:12:53,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480222546] [2022-07-13 02:12:53,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:12:53,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:12:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:12:53,204 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 02:12:53,204 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 02:12:53,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2022-07-13 02:12:53,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:12:53,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-13 02:12:53,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:12:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 0 proven. 1060 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2022-07-13 02:12:54,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:00,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480222546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:00,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:00,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2022-07-13 02:13:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893398943] [2022-07-13 02:13:00,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-13 02:13:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-13 02:13:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2022-07-13 02:13:00,082 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (6), 2 states have call predecessors, (6), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-13 02:13:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:02,321 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2022-07-13 02:13:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-13 02:13:02,321 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (6), 2 states have call predecessors, (6), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) Word has length 238 [2022-07-13 02:13:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:02,322 INFO L225 Difference]: With dead ends: 128 [2022-07-13 02:13:02,322 INFO L226 Difference]: Without dead ends: 125 [2022-07-13 02:13:02,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 245 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=551, Invalid=8379, Unknown=0, NotChecked=0, Total=8930 [2022-07-13 02:13:02,323 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 252 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:02,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1476 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 02:13:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-13 02:13:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2022-07-13 02:13:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 19 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 02:13:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2022-07-13 02:13:02,326 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 238 [2022-07-13 02:13:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:02,327 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2022-07-13 02:13:02,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (6), 2 states have call predecessors, (6), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-13 02:13:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2022-07-13 02:13:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-13 02:13:02,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:02,328 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:02,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-13 02:13:02,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:02,543 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:13:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1020958814, now seen corresponding path program 13 times [2022-07-13 02:13:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:02,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604332664] [2022-07-13 02:13:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:02,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:13:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 922 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-07-13 02:13:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604332664] [2022-07-13 02:13:03,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604332664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:03,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214251081] [2022-07-13 02:13:03,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:13:03,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:03,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:03,524 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 02:13:03,524 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 02:13:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:04,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-13 02:13:04,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:13:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 922 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-07-13 02:13:05,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:13:11,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214251081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:11,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:13:11,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2022-07-13 02:13:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103222944] [2022-07-13 02:13:11,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:13:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-13 02:13:11,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:13:11,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-13 02:13:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2022-07-13 02:13:11,467 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2022-07-13 02:13:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:13:13,953 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2022-07-13 02:13:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 02:13:13,954 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) Word has length 236 [2022-07-13 02:13:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:13:13,961 INFO L225 Difference]: With dead ends: 133 [2022-07-13 02:13:13,961 INFO L226 Difference]: Without dead ends: 130 [2022-07-13 02:13:13,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 239 SyntacticMatches, 17 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=582, Invalid=9318, Unknown=0, NotChecked=0, Total=9900 [2022-07-13 02:13:13,963 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 205 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:13:13,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1767 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3610 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 02:13:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-13 02:13:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-07-13 02:13:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 104 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (21), 21 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 02:13:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2022-07-13 02:13:13,967 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 236 [2022-07-13 02:13:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:13:13,968 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2022-07-13 02:13:13,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (5), 2 states have call predecessors, (5), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2022-07-13 02:13:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2022-07-13 02:13:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-13 02:13:13,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:13:13,969 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:13:13,989 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 02:13:14,172 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,SelfDestructingSolverStorable34 [2022-07-13 02:13:14,173 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:13:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:13:14,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1916511274, now seen corresponding path program 14 times [2022-07-13 02:13:14,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:13:14,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064104579] [2022-07-13 02:13:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:13:14,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:13:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:13:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:13:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:13:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:13:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2110 backedges. 0 proven. 1021 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2022-07-13 02:13:15,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:13:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064104579] [2022-07-13 02:13:15,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064104579] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:13:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492986036] [2022-07-13 02:13:15,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:13:15,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:13:15,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:13:15,369 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 02:13:15,370 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 02:13:15,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:13:15,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:13:15,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-13 02:13:15,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:13:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2110 backedges. 0 proven. 1021 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2022-07-13 02:13:17,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:15:20,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492986036] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:20,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:15:20,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 63 [2022-07-13 02:15:20,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58668421] [2022-07-13 02:15:20,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:15:20,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-13 02:15:20,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:15:20,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-13 02:15:20,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=4339, Unknown=41, NotChecked=0, Total=4692 [2022-07-13 02:15:20,246 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (5), 2 states have call predecessors, (5), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-13 02:15:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:15:23,112 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2022-07-13 02:15:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 02:15:23,112 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (5), 2 states have call predecessors, (5), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) Word has length 248 [2022-07-13 02:15:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:15:23,113 INFO L225 Difference]: With dead ends: 138 [2022-07-13 02:15:23,113 INFO L226 Difference]: Without dead ends: 135 [2022-07-13 02:15:23,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 254 SyntacticMatches, 18 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 112.6s TimeCoverageRelationStatistics Valid=794, Invalid=10721, Unknown=41, NotChecked=0, Total=11556 [2022-07-13 02:15:23,114 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 277 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:15:23,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2005 Invalid, 3879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3704 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 02:15:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-13 02:15:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2022-07-13 02:15:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 4 states have call successors, (4), 3 states have call predecessors, (4), 21 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 02:15:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2022-07-13 02:15:23,117 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 248 [2022-07-13 02:15:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:15:23,117 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2022-07-13 02:15:23,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (5), 2 states have call predecessors, (5), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-13 02:15:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2022-07-13 02:15:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-13 02:15:23,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:15:23,119 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:15:23,138 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 02:15:23,335 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,SelfDestructingSolverStorable35 [2022-07-13 02:15:23,335 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:15:23,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:15:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2082304546, now seen corresponding path program 15 times [2022-07-13 02:15:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:15:23,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015237931] [2022-07-13 02:15:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:15:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:15:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:15:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-07-13 02:15:24,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:15:24,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015237931] [2022-07-13 02:15:24,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015237931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:24,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718625106] [2022-07-13 02:15:24,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:15:24,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:15:24,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:15:24,599 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 02:15:24,601 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 02:15:25,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-07-13 02:15:25,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:15:25,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-13 02:15:25,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:15:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-07-13 02:15:26,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:15:35,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718625106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:35,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:15:35,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2022-07-13 02:15:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930618637] [2022-07-13 02:15:35,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:15:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-07-13 02:15:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:15:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-07-13 02:15:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=4474, Unknown=0, NotChecked=0, Total=4692 [2022-07-13 02:15:35,287 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) [2022-07-13 02:15:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:15:38,247 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2022-07-13 02:15:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-13 02:15:38,248 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) Word has length 260 [2022-07-13 02:15:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:15:38,249 INFO L225 Difference]: With dead ends: 143 [2022-07-13 02:15:38,249 INFO L226 Difference]: Without dead ends: 140 [2022-07-13 02:15:38,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 263 SyntacticMatches, 19 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=644, Invalid=11346, Unknown=0, NotChecked=0, Total=11990 [2022-07-13 02:15:38,250 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 290 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 4194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:15:38,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1879 Invalid, 4194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 02:15:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-13 02:15:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2022-07-13 02:15:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (23), 23 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-13 02:15:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2022-07-13 02:15:38,253 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 260 [2022-07-13 02:15:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:15:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2022-07-13 02:15:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) [2022-07-13 02:15:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2022-07-13 02:15:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 02:15:38,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:15:38,255 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:15:38,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-13 02:15:38,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-13 02:15:38,471 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-07-13 02:15:38,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:15:38,471 INFO L85 PathProgramCache]: Analyzing trace with hash -306776746, now seen corresponding path program 16 times [2022-07-13 02:15:38,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:15:38,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322927357] [2022-07-13 02:15:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:15:38,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:15:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 02:15:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 02:15:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 02:15:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:15:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 0 proven. 1234 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2022-07-13 02:15:39,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:15:39,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322927357] [2022-07-13 02:15:39,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322927357] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:39,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968084464] [2022-07-13 02:15:39,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:15:39,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:15:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:15:39,822 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:15:39,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-13 02:15:40,578 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:15:40,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:15:40,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-13 02:15:40,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:15:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 0 proven. 1234 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2022-07-13 02:15:42,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:15:51,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968084464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:15:51,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:15:51,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 69 [2022-07-13 02:15:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933416944] [2022-07-13 02:15:51,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:15:51,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-07-13 02:15:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:15:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-07-13 02:15:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4884, Unknown=0, NotChecked=0, Total=5112 [2022-07-13 02:15:51,875 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (5), 2 states have call predecessors, (5), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43)