./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/MultCommutative-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:30:44,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:30:44,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:30:44,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:30:44,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:30:44,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:30:44,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:30:44,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:30:44,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:30:44,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:30:44,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:30:44,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:30:44,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:30:44,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:30:44,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:30:44,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:30:44,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:30:44,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:30:44,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:30:44,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:30:44,380 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:30:44,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:30:44,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:30:44,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:30:44,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:30:44,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:30:44,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:30:44,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:30:44,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:30:44,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:30:44,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:30:44,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:30:44,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:30:44,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:30:44,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:30:44,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:30:44,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:30:44,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:30:44,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:30:44,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:30:44,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:30:44,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:30:44,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-23 13:30:44,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:30:44,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:30:44,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:30:44,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:30:44,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:30:44,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:30:44,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:30:44,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:30:44,442 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:30:44,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:30:44,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:30:44,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:30:44,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:30:44,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:30:44,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:30:44,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:30:44,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:30:44,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:30:44,445 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:30:44,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:30:44,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:30:44,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:30:44,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:30:44,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:30:44,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:30:44,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:30:44,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:30:44,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:30:44,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:30:44,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:30:44,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:30:44,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:30:44,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:30:44,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-07-23 13:30:44,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:30:44,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:30:44,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:30:44,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:30:44,716 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:30:44,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-23 13:30:44,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8a560a3/ee606eeb42ce4da7a21eb0f40f526aeb/FLAGe0be1917a [2022-07-23 13:30:45,132 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:30:45,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-07-23 13:30:45,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8a560a3/ee606eeb42ce4da7a21eb0f40f526aeb/FLAGe0be1917a [2022-07-23 13:30:45,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8a560a3/ee606eeb42ce4da7a21eb0f40f526aeb [2022-07-23 13:30:45,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:30:45,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:30:45,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:30:45,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:30:45,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:30:45,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd234dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45, skipping insertion in model container [2022-07-23 13:30:45,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:30:45,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:30:45,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-07-23 13:30:45,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:30:45,345 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:30:45,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-07-23 13:30:45,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:30:45,385 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:30:45,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45 WrapperNode [2022-07-23 13:30:45,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:30:45,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:30:45,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:30:45,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:30:45,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,415 INFO L137 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-23 13:30:45,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:30:45,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:30:45,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:30:45,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:30:45,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:30:45,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:30:45,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:30:45,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:30:45,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (1/1) ... [2022-07-23 13:30:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:30:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:45,488 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) [2022-07-23 13:30:45,517 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 [2022-07-23 13:30:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:30:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-23 13:30:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-23 13:30:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:30:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:30:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 13:30:45,583 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:30:45,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:30:45,689 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:30:45,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:30:45,694 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 13:30:45,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:30:45 BoogieIcfgContainer [2022-07-23 13:30:45,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:30:45,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:30:45,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:30:45,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:30:45,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:30:45" (1/3) ... [2022-07-23 13:30:45,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bd6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:30:45, skipping insertion in model container [2022-07-23 13:30:45,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:30:45" (2/3) ... [2022-07-23 13:30:45,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bd6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:30:45, skipping insertion in model container [2022-07-23 13:30:45,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:30:45" (3/3) ... [2022-07-23 13:30:45,703 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-07-23 13:30:45,716 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:30:45,716 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-23 13:30:45,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:30:45,768 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@68dfdf67, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@550865aa [2022-07-23 13:30:45,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-23 13:30:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:30:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:30:45,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:45,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:45,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-07-23 13:30:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:45,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277803698] [2022-07-23 13:30:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:45,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:45,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:45,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277803698] [2022-07-23 13:30:45,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277803698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:30:45,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:30:45,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:30:45,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308954161] [2022-07-23 13:30:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:30:45,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:30:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:45,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:30:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:30:46,000 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:46,106 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2022-07-23 13:30:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:30:46,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 13:30:46,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:46,115 INFO L225 Difference]: With dead ends: 81 [2022-07-23 13:30:46,116 INFO L226 Difference]: Without dead ends: 43 [2022-07-23 13:30:46,119 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 [2022-07-23 13:30:46,122 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:46,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-23 13:30:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-07-23 13:30:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:30:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-07-23 13:30:46,158 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-07-23 13:30:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:46,158 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-07-23 13:30:46,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-07-23 13:30:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 13:30:46,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:46,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:46,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:30:46,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2022-07-23 13:30:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:46,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106923609] [2022-07-23 13:30:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:46,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:46,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106923609] [2022-07-23 13:30:46,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106923609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:30:46,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:30:46,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:30:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721687059] [2022-07-23 13:30:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:30:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:30:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:30:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:30:46,207 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:46,293 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-07-23 13:30:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:30:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-23 13:30:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:46,295 INFO L225 Difference]: With dead ends: 59 [2022-07-23 13:30:46,296 INFO L226 Difference]: Without dead ends: 57 [2022-07-23 13:30:46,296 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 [2022-07-23 13:30:46,298 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:46,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-23 13:30:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-07-23 13:30:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-23 13:30:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-07-23 13:30:46,309 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2022-07-23 13:30:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:46,309 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-07-23 13:30:46,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-07-23 13:30:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 13:30:46,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:46,310 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:46,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:30:46,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2022-07-23 13:30:46,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:46,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455695497] [2022-07-23 13:30:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:46,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455695497] [2022-07-23 13:30:46,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455695497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:30:46,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:30:46,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:30:46,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126071209] [2022-07-23 13:30:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:30:46,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:30:46,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:30:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:30:46,358 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:46,422 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-07-23 13:30:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:30:46,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-23 13:30:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:46,425 INFO L225 Difference]: With dead ends: 77 [2022-07-23 13:30:46,425 INFO L226 Difference]: Without dead ends: 76 [2022-07-23 13:30:46,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:30:46,426 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:46,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:30:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-23 13:30:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-07-23 13:30:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-23 13:30:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-07-23 13:30:46,446 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2022-07-23 13:30:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:46,446 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-07-23 13:30:46,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-07-23 13:30:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 13:30:46,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:46,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:46,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:30:46,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:46,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2022-07-23 13:30:46,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:46,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776228157] [2022-07-23 13:30:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:46,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:46,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776228157] [2022-07-23 13:30:46,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776228157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:30:46,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:30:46,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:30:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350829852] [2022-07-23 13:30:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:30:46,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:30:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:30:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:30:46,534 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:30:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:46,614 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-07-23 13:30:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:30:46,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-23 13:30:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:46,617 INFO L225 Difference]: With dead ends: 121 [2022-07-23 13:30:46,617 INFO L226 Difference]: Without dead ends: 85 [2022-07-23 13:30:46,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:30:46,619 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:46,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-23 13:30:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-07-23 13:30:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-23 13:30:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-07-23 13:30:46,632 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2022-07-23 13:30:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:46,633 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-07-23 13:30:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:30:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-07-23 13:30:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 13:30:46,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:46,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:46,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:30:46,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2022-07-23 13:30:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:46,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300227540] [2022-07-23 13:30:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300227540] [2022-07-23 13:30:46,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300227540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:30:46,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:30:46,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:30:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608390231] [2022-07-23 13:30:46,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:30:46,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:30:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:46,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:30:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:30:46,682 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:30:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:46,761 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-07-23 13:30:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:30:46,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-23 13:30:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:46,765 INFO L225 Difference]: With dead ends: 102 [2022-07-23 13:30:46,765 INFO L226 Difference]: Without dead ends: 101 [2022-07-23 13:30:46,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:30:46,775 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:46,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:30:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-23 13:30:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-07-23 13:30:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 13:30:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-07-23 13:30:46,806 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2022-07-23 13:30:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:46,806 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-07-23 13:30:46,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 13:30:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-07-23 13:30:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 13:30:46,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:46,808 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:46,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:30:46,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2022-07-23 13:30:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:46,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23652829] [2022-07-23 13:30:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:46,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:46,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:46,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23652829] [2022-07-23 13:30:46,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23652829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:30:46,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:30:46,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 13:30:46,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965616223] [2022-07-23 13:30:46,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:30:46,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:30:46,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:30:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:30:46,879 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:46,920 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2022-07-23 13:30:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 13:30:46,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-23 13:30:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:46,922 INFO L225 Difference]: With dead ends: 133 [2022-07-23 13:30:46,922 INFO L226 Difference]: Without dead ends: 59 [2022-07-23 13:30:46,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:30:46,924 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:46,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:30:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-23 13:30:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-07-23 13:30:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-23 13:30:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-07-23 13:30:46,931 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2022-07-23 13:30:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:46,931 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-07-23 13:30:46,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-07-23 13:30:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 13:30:46,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:46,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:46,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 13:30:46,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-07-23 13:30:46,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341038907] [2022-07-23 13:30:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:46,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:30:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:47,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341038907] [2022-07-23 13:30:47,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341038907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:47,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240453470] [2022-07-23 13:30:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:47,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:47,011 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) [2022-07-23 13:30:47,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:30:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:47,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:30:47,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:47,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:47,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240453470] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:47,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:47,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-23 13:30:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259034538] [2022-07-23 13:30:47,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:47,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 13:30:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 13:30:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:30:47,188 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:30:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:47,284 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-07-23 13:30:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:30:47,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2022-07-23 13:30:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:47,285 INFO L225 Difference]: With dead ends: 67 [2022-07-23 13:30:47,285 INFO L226 Difference]: Without dead ends: 66 [2022-07-23 13:30:47,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:30:47,287 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:47,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-23 13:30:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-07-23 13:30:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-23 13:30:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-07-23 13:30:47,294 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-07-23 13:30:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:47,294 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-07-23 13:30:47,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:30:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-07-23 13:30:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 13:30:47,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:47,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:47,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 13:30:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:47,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-07-23 13:30:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:47,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689288306] [2022-07-23 13:30:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:47,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:30:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:47,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:47,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689288306] [2022-07-23 13:30:47,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689288306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:47,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017598867] [2022-07-23 13:30:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:47,599 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) [2022-07-23 13:30:47,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:30:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:47,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:30:47,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:47,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:47,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017598867] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:47,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:47,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-23 13:30:47,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159940707] [2022-07-23 13:30:47,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 13:30:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 13:30:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:30:47,726 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:30:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:47,813 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-07-23 13:30:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 13:30:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-23 13:30:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:47,815 INFO L225 Difference]: With dead ends: 65 [2022-07-23 13:30:47,815 INFO L226 Difference]: Without dead ends: 64 [2022-07-23 13:30:47,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:30:47,819 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:47,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 91 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:30:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-23 13:30:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-07-23 13:30:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-23 13:30:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-07-23 13:30:47,835 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2022-07-23 13:30:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:47,835 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-07-23 13:30:47,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 13:30:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-07-23 13:30:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-23 13:30:47,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:47,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:47,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 13:30:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-23 13:30:48,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-07-23 13:30:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:48,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212128015] [2022-07-23 13:30:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-23 13:30:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:48,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212128015] [2022-07-23 13:30:48,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212128015] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330543370] [2022-07-23 13:30:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:48,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:48,159 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) [2022-07-23 13:30:48,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:30:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:30:48,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:48,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:48,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330543370] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:48,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:48,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-07-23 13:30:48,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296671379] [2022-07-23 13:30:48,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:48,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 13:30:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:48,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 13:30:48,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:30:48,299 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:30:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:48,452 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-07-23 13:30:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:30:48,452 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-07-23 13:30:48,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:48,453 INFO L225 Difference]: With dead ends: 94 [2022-07-23 13:30:48,453 INFO L226 Difference]: Without dead ends: 93 [2022-07-23 13:30:48,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:30:48,454 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:48,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-23 13:30:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-07-23 13:30:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-23 13:30:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-07-23 13:30:48,462 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2022-07-23 13:30:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:48,462 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-07-23 13:30:48,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:30:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-07-23 13:30:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-23 13:30:48,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:48,463 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:48,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:48,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:48,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-07-23 13:30:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:48,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902628390] [2022-07-23 13:30:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-23 13:30:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 13:30:48,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:48,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902628390] [2022-07-23 13:30:48,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902628390] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:48,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893486484] [2022-07-23 13:30:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:48,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:48,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:48,754 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) [2022-07-23 13:30:48,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:30:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:48,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:30:48,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:30:48,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:30:48,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893486484] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:48,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:48,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-07-23 13:30:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780825679] [2022-07-23 13:30:48,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:48,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 13:30:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 13:30:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:30:48,870 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:30:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:48,944 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2022-07-23 13:30:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 13:30:48,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-07-23 13:30:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:48,946 INFO L225 Difference]: With dead ends: 97 [2022-07-23 13:30:48,946 INFO L226 Difference]: Without dead ends: 64 [2022-07-23 13:30:48,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:30:48,947 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:48,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:30:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-23 13:30:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-07-23 13:30:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-23 13:30:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-07-23 13:30:48,953 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2022-07-23 13:30:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:48,953 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-07-23 13:30:48,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 13:30:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-07-23 13:30:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-23 13:30:48,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:48,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:48,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:49,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2022-07-23 13:30:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:49,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734791010] [2022-07-23 13:30:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:30:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734791010] [2022-07-23 13:30:49,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734791010] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:49,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118656033] [2022-07-23 13:30:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:49,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:49,300 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) [2022-07-23 13:30:49,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:30:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:49,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:30:49,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:49,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:30:49,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118656033] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:49,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:49,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-23 13:30:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668096366] [2022-07-23 13:30:49,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 13:30:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 13:30:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-23 13:30:49,593 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-23 13:30:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:49,887 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-07-23 13:30:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 13:30:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2022-07-23 13:30:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:49,888 INFO L225 Difference]: With dead ends: 87 [2022-07-23 13:30:49,888 INFO L226 Difference]: Without dead ends: 86 [2022-07-23 13:30:49,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2022-07-23 13:30:49,890 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:49,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 133 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-23 13:30:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-07-23 13:30:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-23 13:30:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-07-23 13:30:49,894 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 29 [2022-07-23 13:30:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-07-23 13:30:49,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-23 13:30:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-07-23 13:30:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-23 13:30:49,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:49,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:49,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-23 13:30:50,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash 358409096, now seen corresponding path program 1 times [2022-07-23 13:30:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755001245] [2022-07-23 13:30:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-23 13:30:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:30:50,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:50,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755001245] [2022-07-23 13:30:50,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755001245] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:50,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461307374] [2022-07-23 13:30:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:50,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:50,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:50,222 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) [2022-07-23 13:30:50,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:30:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:50,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:30:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:30:50,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 13:30:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461307374] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:50,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:50,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-07-23 13:30:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468078115] [2022-07-23 13:30:50,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:50,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 13:30:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 13:30:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-07-23 13:30:50,511 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-23 13:30:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:50,891 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-23 13:30:50,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-23 13:30:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2022-07-23 13:30:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:50,893 INFO L225 Difference]: With dead ends: 128 [2022-07-23 13:30:50,893 INFO L226 Difference]: Without dead ends: 123 [2022-07-23 13:30:50,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-07-23 13:30:50,894 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 115 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:50,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 94 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:30:50,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-23 13:30:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 69. [2022-07-23 13:30:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-23 13:30:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-07-23 13:30:50,901 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2022-07-23 13:30:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-07-23 13:30:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-23 13:30:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-07-23 13:30:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-23 13:30:50,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:50,903 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:50,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:51,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:51,120 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash -421481335, now seen corresponding path program 2 times [2022-07-23 13:30:51,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:51,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854106709] [2022-07-23 13:30:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:51,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:30:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:30:51,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:51,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854106709] [2022-07-23 13:30:51,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854106709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:51,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590952559] [2022-07-23 13:30:51,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:30:51,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:51,293 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) [2022-07-23 13:30:51,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:30:51,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:30:51,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:30:51,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 13:30:51,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:30:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-23 13:30:52,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590952559] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:52,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:52,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2022-07-23 13:30:52,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797404416] [2022-07-23 13:30:52,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:52,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-23 13:30:52,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:52,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-23 13:30:52,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-07-23 13:30:52,323 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-23 13:30:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:52,998 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2022-07-23 13:30:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-23 13:30:52,999 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2022-07-23 13:30:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:53,000 INFO L225 Difference]: With dead ends: 140 [2022-07-23 13:30:53,000 INFO L226 Difference]: Without dead ends: 139 [2022-07-23 13:30:53,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2022-07-23 13:30:53,002 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:53,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 176 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:30:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-23 13:30:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2022-07-23 13:30:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-23 13:30:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-07-23 13:30:53,016 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 51 [2022-07-23 13:30:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:53,018 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-07-23 13:30:53,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-23 13:30:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-07-23 13:30:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 13:30:53,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:53,019 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:53,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:53,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:53,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1225939680, now seen corresponding path program 2 times [2022-07-23 13:30:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:53,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333918653] [2022-07-23 13:30:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-23 13:30:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 13:30:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:53,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333918653] [2022-07-23 13:30:53,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333918653] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110207028] [2022-07-23 13:30:53,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:30:53,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:53,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:53,336 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) [2022-07-23 13:30:53,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:30:53,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:30:53,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:30:53,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:30:53,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 13:30:53,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 13:30:53,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110207028] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:53,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:53,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-23 13:30:53,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046318748] [2022-07-23 13:30:53,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:53,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 13:30:53,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:53,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 13:30:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-07-23 13:30:53,637 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-23 13:30:53,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:53,873 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2022-07-23 13:30:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 13:30:53,874 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 47 [2022-07-23 13:30:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:53,875 INFO L225 Difference]: With dead ends: 110 [2022-07-23 13:30:53,875 INFO L226 Difference]: Without dead ends: 105 [2022-07-23 13:30:53,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-07-23 13:30:53,876 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:53,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 173 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:30:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-23 13:30:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2022-07-23 13:30:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-23 13:30:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-07-23 13:30:53,883 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 47 [2022-07-23 13:30:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:53,883 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-07-23 13:30:53,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-23 13:30:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-07-23 13:30:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-23 13:30:53,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:53,885 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:53,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:54,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-23 13:30:54,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1983155908, now seen corresponding path program 3 times [2022-07-23 13:30:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:54,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344309657] [2022-07-23 13:30:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:54,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:30:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:30:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-23 13:30:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:54,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344309657] [2022-07-23 13:30:54,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344309657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:54,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33823318] [2022-07-23 13:30:54,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:30:54,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:54,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:54,373 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) [2022-07-23 13:30:54,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:30:54,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-23 13:30:54,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:30:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 13:30:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 75 proven. 96 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-23 13:30:54,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-23 13:30:55,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33823318] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:55,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:55,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2022-07-23 13:30:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299775718] [2022-07-23 13:30:55,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-23 13:30:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-23 13:30:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-07-23 13:30:55,399 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-23 13:30:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:56,773 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-07-23 13:30:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-23 13:30:56,773 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2022-07-23 13:30:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:56,775 INFO L225 Difference]: With dead ends: 208 [2022-07-23 13:30:56,775 INFO L226 Difference]: Without dead ends: 191 [2022-07-23 13:30:56,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=988, Invalid=5174, Unknown=0, NotChecked=0, Total=6162 [2022-07-23 13:30:56,777 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 180 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:56,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 240 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 13:30:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-23 13:30:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 119. [2022-07-23 13:30:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2022-07-23 13:30:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2022-07-23 13:30:56,783 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 81 [2022-07-23 13:30:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:56,784 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2022-07-23 13:30:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-23 13:30:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2022-07-23 13:30:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-23 13:30:56,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:56,785 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:30:56,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:56,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-23 13:30:56,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:56,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:56,996 INFO L85 PathProgramCache]: Analyzing trace with hash 274461965, now seen corresponding path program 3 times [2022-07-23 13:30:56,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:56,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420190373] [2022-07-23 13:30:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:56,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:30:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:30:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-23 13:30:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:57,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420190373] [2022-07-23 13:30:57,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420190373] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:57,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916397402] [2022-07-23 13:30:57,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:30:57,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:57,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:57,408 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) [2022-07-23 13:30:57,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:30:57,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-23 13:30:57,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:30:57,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-23 13:30:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-23 13:30:57,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:31:04,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916397402] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:31:04,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:31:04,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-07-23 13:31:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19693205] [2022-07-23 13:31:04,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:31:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-23 13:31:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:31:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-23 13:31:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1284, Unknown=2, NotChecked=0, Total=1482 [2022-07-23 13:31:04,217 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-23 13:31:05,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:31:05,257 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2022-07-23 13:31:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-23 13:31:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2022-07-23 13:31:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:31:05,258 INFO L225 Difference]: With dead ends: 166 [2022-07-23 13:31:05,259 INFO L226 Difference]: Without dead ends: 165 [2022-07-23 13:31:05,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=515, Invalid=3515, Unknown=2, NotChecked=0, Total=4032 [2022-07-23 13:31:05,260 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:31:05,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 378 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 13:31:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-23 13:31:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 124. [2022-07-23 13:31:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 18 states have return successors, (28), 21 states have call predecessors, (28), 5 states have call successors, (28) [2022-07-23 13:31:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2022-07-23 13:31:05,267 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 95 [2022-07-23 13:31:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:31:05,267 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2022-07-23 13:31:05,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 30 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 16 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-23 13:31:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2022-07-23 13:31:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-23 13:31:05,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:31:05,269 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:31:05,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:31:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-23 13:31:05,492 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:31:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:31:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1943630407, now seen corresponding path program 4 times [2022-07-23 13:31:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:31:05,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105273317] [2022-07-23 13:31:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:31:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:31:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:31:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-23 13:31:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:31:05,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105273317] [2022-07-23 13:31:05,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105273317] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:31:05,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472640030] [2022-07-23 13:31:05,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:31:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:31:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:31:05,972 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) [2022-07-23 13:31:05,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:31:06,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:31:06,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:31:06,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-23 13:31:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:31:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-23 13:31:06,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:31:49,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472640030] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:31:49,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:31:49,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2022-07-23 13:31:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401674188] [2022-07-23 13:31:49,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:31:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-23 13:31:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:31:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-23 13:31:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1300, Unknown=20, NotChecked=0, Total=1482 [2022-07-23 13:31:49,715 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-23 13:31:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:31:51,227 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2022-07-23 13:31:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-23 13:31:51,229 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) Word has length 106 [2022-07-23 13:31:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:31:51,231 INFO L225 Difference]: With dead ends: 184 [2022-07-23 13:31:51,231 INFO L226 Difference]: Without dead ends: 183 [2022-07-23 13:31:51,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=466, Invalid=3936, Unknown=20, NotChecked=0, Total=4422 [2022-07-23 13:31:51,233 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-23 13:31:51,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 508 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-23 13:31:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-23 13:31:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 129. [2022-07-23 13:31:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 6 states have call successors, (6), 4 states have call predecessors, (6), 19 states have return successors, (30), 22 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-23 13:31:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2022-07-23 13:31:51,242 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 106 [2022-07-23 13:31:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:31:51,242 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2022-07-23 13:31:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-23 13:31:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2022-07-23 13:31:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-23 13:31:51,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:31:51,244 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:31:51,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:31:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-23 13:31:51,459 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:31:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:31:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1337179471, now seen corresponding path program 5 times [2022-07-23 13:31:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:31:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096510084] [2022-07-23 13:31:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:31:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:31:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:31:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-23 13:31:52,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:31:52,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096510084] [2022-07-23 13:31:52,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096510084] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:31:52,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260980259] [2022-07-23 13:31:52,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:31:52,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:31:52,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:31:52,104 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) [2022-07-23 13:31:52,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:31:52,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-07-23 13:31:52,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:31:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-23 13:31:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:31:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 291 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-23 13:31:52,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:31:54,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260980259] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:31:54,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:31:54,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2022-07-23 13:31:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237057153] [2022-07-23 13:31:54,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:31:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-23 13:31:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:31:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-23 13:31:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-23 13:31:54,771 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-23 13:31:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:31:56,611 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2022-07-23 13:31:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-23 13:31:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) Word has length 117 [2022-07-23 13:31:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:31:56,618 INFO L225 Difference]: With dead ends: 202 [2022-07-23 13:31:56,618 INFO L226 Difference]: Without dead ends: 201 [2022-07-23 13:31:56,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=402, Invalid=4568, Unknown=0, NotChecked=0, Total=4970 [2022-07-23 13:31:56,619 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 161 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:31:56,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 514 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 13:31:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-23 13:31:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 134. [2022-07-23 13:31:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 106 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 20 states have return successors, (32), 23 states have call predecessors, (32), 5 states have call successors, (32) [2022-07-23 13:31:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2022-07-23 13:31:56,627 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 117 [2022-07-23 13:31:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:31:56,628 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2022-07-23 13:31:56,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5) internal successors, (90), 36 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 20 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-23 13:31:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2022-07-23 13:31:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 13:31:56,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:31:56,630 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:31:56,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-23 13:31:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 13:31:56,839 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:31:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:31:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 777113877, now seen corresponding path program 6 times [2022-07-23 13:31:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:31:56,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274671984] [2022-07-23 13:31:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:31:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:31:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 13:31:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:31:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:31:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-23 13:31:57,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:31:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274671984] [2022-07-23 13:31:57,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274671984] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:31:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955639283] [2022-07-23 13:31:57,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:31:57,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:31:57,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:31:57,571 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) [2022-07-23 13:31:57,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 13:31:57,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-23 13:31:57,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:31:57,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-23 13:31:57,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:31:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-23 13:31:58,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:32:09,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955639283] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:09,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:32:09,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2022-07-23 13:32:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487702392] [2022-07-23 13:32:09,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:32:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-23 13:32:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:32:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-23 13:32:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1785, Unknown=3, NotChecked=0, Total=1980 [2022-07-23 13:32:09,137 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-23 13:32:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:32:11,199 INFO L93 Difference]: Finished difference Result 220 states and 241 transitions. [2022-07-23 13:32:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-23 13:32:11,200 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2022-07-23 13:32:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:32:11,202 INFO L225 Difference]: With dead ends: 220 [2022-07-23 13:32:11,202 INFO L226 Difference]: Without dead ends: 219 [2022-07-23 13:32:11,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 148 SyntacticMatches, 10 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=585, Invalid=5892, Unknown=3, NotChecked=0, Total=6480 [2022-07-23 13:32:11,204 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 179 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:32:11,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 552 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 13:32:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-23 13:32:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2022-07-23 13:32:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 111 states have (on average 1.045045045045045) internal successors, (116), 110 states have internal predecessors, (116), 6 states have call successors, (6), 4 states have call predecessors, (6), 21 states have return successors, (34), 24 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-23 13:32:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2022-07-23 13:32:11,212 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 140 [2022-07-23 13:32:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:32:11,213 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2022-07-23 13:32:11,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 4 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (22), 22 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-23 13:32:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2022-07-23 13:32:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-23 13:32:11,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:32:11,215 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:32:11,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 13:32:11,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:11,427 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:32:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:32:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1210211640, now seen corresponding path program 4 times [2022-07-23 13:32:11,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:32:11,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770112168] [2022-07-23 13:32:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:32:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:32:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:32:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:32:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-23 13:32:11,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:32:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770112168] [2022-07-23 13:32:11,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770112168] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407047960] [2022-07-23 13:32:11,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:32:11,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:11,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:32:11,962 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) [2022-07-23 13:32:11,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-23 13:32:12,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:32:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:32:12,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-23 13:32:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:32:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 6 proven. 413 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-23 13:32:12,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:32:19,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407047960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:19,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:32:19,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 34 [2022-07-23 13:32:19,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387008193] [2022-07-23 13:32:19,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:32:19,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-23 13:32:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:32:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-23 13:32:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1598, Unknown=2, NotChecked=0, Total=1806 [2022-07-23 13:32:19,574 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-23 13:32:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:32:21,304 INFO L93 Difference]: Finished difference Result 242 states and 263 transitions. [2022-07-23 13:32:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-23 13:32:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) Word has length 125 [2022-07-23 13:32:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:32:21,306 INFO L225 Difference]: With dead ends: 242 [2022-07-23 13:32:21,306 INFO L226 Difference]: Without dead ends: 239 [2022-07-23 13:32:21,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=713, Invalid=4985, Unknown=2, NotChecked=0, Total=5700 [2022-07-23 13:32:21,308 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 130 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:32:21,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 492 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 13:32:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-23 13:32:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2022-07-23 13:32:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0434782608695652) internal successors, (168), 160 states have internal predecessors, (168), 9 states have call successors, (9), 6 states have call predecessors, (9), 31 states have return successors, (45), 35 states have call predecessors, (45), 7 states have call successors, (45) [2022-07-23 13:32:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2022-07-23 13:32:21,318 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 125 [2022-07-23 13:32:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:32:21,318 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2022-07-23 13:32:21,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 7 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (19), 18 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-23 13:32:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2022-07-23 13:32:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-23 13:32:21,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:32:21,320 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:32:21,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-23 13:32:21,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:21,544 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:32:21,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:32:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1390512751, now seen corresponding path program 7 times [2022-07-23 13:32:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:32:21,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876582931] [2022-07-23 13:32:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:32:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:32:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:32:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-23 13:32:22,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:32:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876582931] [2022-07-23 13:32:22,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876582931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921207738] [2022-07-23 13:32:22,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:32:22,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:22,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:32:22,363 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) [2022-07-23 13:32:22,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-23 13:32:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:22,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-23 13:32:22,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:32:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-23 13:32:23,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:32:26,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921207738] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:26,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:32:26,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2022-07-23 13:32:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187100229] [2022-07-23 13:32:26,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:32:26,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-23 13:32:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:32:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-23 13:32:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2022-07-23 13:32:26,163 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-23 13:32:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:32:28,487 INFO L93 Difference]: Finished difference Result 314 states and 347 transitions. [2022-07-23 13:32:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-23 13:32:28,487 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2022-07-23 13:32:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:32:28,489 INFO L225 Difference]: With dead ends: 314 [2022-07-23 13:32:28,489 INFO L226 Difference]: Without dead ends: 313 [2022-07-23 13:32:28,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 140 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=501, Invalid=6639, Unknown=0, NotChecked=0, Total=7140 [2022-07-23 13:32:28,491 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 277 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:32:28,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 624 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-23 13:32:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-23 13:32:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 207. [2022-07-23 13:32:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0424242424242425) internal successors, (172), 164 states have internal predecessors, (172), 9 states have call successors, (9), 6 states have call predecessors, (9), 32 states have return successors, (47), 36 states have call predecessors, (47), 7 states have call successors, (47) [2022-07-23 13:32:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2022-07-23 13:32:28,502 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 139 [2022-07-23 13:32:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:32:28,502 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2022-07-23 13:32:28,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.4761904761904763) internal successors, (104), 42 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (24), 24 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-23 13:32:28,503 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2022-07-23 13:32:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-23 13:32:28,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:32:28,505 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 11, 10, 10, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:32:28,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-23 13:32:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:28,723 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:32:28,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:32:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2054517474, now seen corresponding path program 5 times [2022-07-23 13:32:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:32:28,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752468717] [2022-07-23 13:32:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:32:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:32:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:32:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:32:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:28,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:28,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:28,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 6 proven. 486 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-23 13:32:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:32:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752468717] [2022-07-23 13:32:29,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752468717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302894444] [2022-07-23 13:32:29,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:32:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:32:29,328 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) [2022-07-23 13:32:29,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-23 13:32:29,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-23 13:32:29,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:32:29,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-23 13:32:29,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:32:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 145 proven. 341 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-23 13:32:30,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:32:46,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302894444] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:46,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:32:46,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 39 [2022-07-23 13:32:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656797245] [2022-07-23 13:32:46,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:32:46,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-23 13:32:46,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:32:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-23 13:32:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1795, Unknown=6, NotChecked=0, Total=1980 [2022-07-23 13:32:46,103 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-23 13:32:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:32:49,139 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-07-23 13:32:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-23 13:32:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) Word has length 136 [2022-07-23 13:32:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:32:49,141 INFO L225 Difference]: With dead ends: 270 [2022-07-23 13:32:49,141 INFO L226 Difference]: Without dead ends: 263 [2022-07-23 13:32:49,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=998, Invalid=9096, Unknown=6, NotChecked=0, Total=10100 [2022-07-23 13:32:49,143 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 214 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:32:49,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 646 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-23 13:32:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-23 13:32:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 154. [2022-07-23 13:32:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 122 states have internal predecessors, (128), 6 states have call successors, (6), 4 states have call predecessors, (6), 24 states have return successors, (38), 27 states have call predecessors, (38), 5 states have call successors, (38) [2022-07-23 13:32:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2022-07-23 13:32:49,150 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 136 [2022-07-23 13:32:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:32:49,151 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2022-07-23 13:32:49,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 38 states have internal predecessors, (110), 8 states have call successors, (12), 3 states have call predecessors, (12), 12 states have return successors, (22), 22 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-23 13:32:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2022-07-23 13:32:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-23 13:32:49,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:32:49,153 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:32:49,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-23 13:32:49,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-23 13:32:49,372 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:32:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:32:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash -333411757, now seen corresponding path program 8 times [2022-07-23 13:32:49,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:32:49,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633927795] [2022-07-23 13:32:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:32:49,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:32:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 13:32:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:50,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-23 13:32:50,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:32:50,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633927795] [2022-07-23 13:32:50,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633927795] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:50,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121184001] [2022-07-23 13:32:50,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:32:50,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:50,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:32:50,273 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) [2022-07-23 13:32:50,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-23 13:32:50,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:32:50,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:32:50,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-23 13:32:50,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:32:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-07-23 13:32:51,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:32:54,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121184001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:54,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:32:54,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2022-07-23 13:32:54,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142033833] [2022-07-23 13:32:54,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:32:54,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-23 13:32:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:32:54,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-23 13:32:54,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:32:54,867 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-23 13:32:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:32:57,726 INFO L93 Difference]: Finished difference Result 250 states and 273 transitions. [2022-07-23 13:32:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-23 13:32:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) Word has length 162 [2022-07-23 13:32:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:32:57,729 INFO L225 Difference]: With dead ends: 250 [2022-07-23 13:32:57,729 INFO L226 Difference]: Without dead ends: 249 [2022-07-23 13:32:57,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 167 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=524, Invalid=7486, Unknown=0, NotChecked=0, Total=8010 [2022-07-23 13:32:57,731 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 201 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:32:57,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 815 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-23 13:32:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-23 13:32:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2022-07-23 13:32:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (40), 28 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-23 13:32:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2022-07-23 13:32:57,738 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 162 [2022-07-23 13:32:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:32:57,739 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-07-23 13:32:57,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 4 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (26), 26 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-23 13:32:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2022-07-23 13:32:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-23 13:32:57,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:32:57,742 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:32:57,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-23 13:32:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:57,955 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:32:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:32:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1275355944, now seen corresponding path program 6 times [2022-07-23 13:32:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:32:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149213874] [2022-07-23 13:32:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:32:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:32:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:32:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-23 13:32:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:32:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:32:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 2 proven. 436 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-23 13:32:58,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:32:58,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149213874] [2022-07-23 13:32:58,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149213874] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:32:58,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137620892] [2022-07-23 13:32:58,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:32:58,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:32:58,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:32:58,640 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) [2022-07-23 13:32:58,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-23 13:32:59,014 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-07-23 13:32:59,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:32:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-23 13:32:59,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:32:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 141 proven. 291 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-23 13:32:59,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:33:01,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137620892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:01,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:33:01,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 42 [2022-07-23 13:33:01,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946145977] [2022-07-23 13:33:01,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:33:01,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-23 13:33:01,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:33:01,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-23 13:33:01,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1846, Unknown=0, NotChecked=0, Total=1980 [2022-07-23 13:33:01,564 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-23 13:33:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:33:05,149 INFO L93 Difference]: Finished difference Result 288 states and 311 transitions. [2022-07-23 13:33:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-23 13:33:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 135 [2022-07-23 13:33:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:33:05,150 INFO L225 Difference]: With dead ends: 288 [2022-07-23 13:33:05,150 INFO L226 Difference]: Without dead ends: 283 [2022-07-23 13:33:05,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 139 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=920, Invalid=10422, Unknown=0, NotChecked=0, Total=11342 [2022-07-23 13:33:05,152 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 234 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3407 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:33:05,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 762 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3407 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-23 13:33:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-23 13:33:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 164. [2022-07-23 13:33:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 26 states have return successors, (41), 29 states have call predecessors, (41), 5 states have call successors, (41) [2022-07-23 13:33:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2022-07-23 13:33:05,159 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 135 [2022-07-23 13:33:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:33:05,160 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2022-07-23 13:33:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 41 states have internal predecessors, (117), 8 states have call successors, (10), 3 states have call predecessors, (10), 13 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-23 13:33:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2022-07-23 13:33:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-23 13:33:05,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:33:05,162 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:33:05,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-23 13:33:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:05,387 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:33:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:33:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1249721811, now seen corresponding path program 9 times [2022-07-23 13:33:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:33:05,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838435793] [2022-07-23 13:33:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:33:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:33:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:33:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-23 13:33:06,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:33:06,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838435793] [2022-07-23 13:33:06,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838435793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:06,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473694029] [2022-07-23 13:33:06,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:33:06,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:06,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:33:06,384 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) [2022-07-23 13:33:06,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-23 13:33:06,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-23 13:33:06,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:33:06,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-23 13:33:06,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:33:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 549 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-23 13:33:07,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:33:12,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473694029] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:12,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:33:12,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2022-07-23 13:33:12,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470408389] [2022-07-23 13:33:12,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:33:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-23 13:33:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:33:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-23 13:33:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2022-07-23 13:33:12,037 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-23 13:33:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:33:15,040 INFO L93 Difference]: Finished difference Result 265 states and 289 transitions. [2022-07-23 13:33:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-23 13:33:15,041 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) Word has length 161 [2022-07-23 13:33:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:33:15,042 INFO L225 Difference]: With dead ends: 265 [2022-07-23 13:33:15,042 INFO L226 Difference]: Without dead ends: 264 [2022-07-23 13:33:15,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1688 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=561, Invalid=8559, Unknown=0, NotChecked=0, Total=9120 [2022-07-23 13:33:15,043 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 219 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:33:15,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 830 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-23 13:33:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-23 13:33:15,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 169. [2022-07-23 13:33:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 135 states have (on average 1.037037037037037) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 4 states have call predecessors, (6), 27 states have return successors, (43), 30 states have call predecessors, (43), 5 states have call successors, (43) [2022-07-23 13:33:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2022-07-23 13:33:15,052 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 161 [2022-07-23 13:33:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:33:15,052 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2022-07-23 13:33:15,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.4583333333333335) internal successors, (118), 48 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (28), 28 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-23 13:33:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2022-07-23 13:33:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-23 13:33:15,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:33:15,054 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 13, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:33:15,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-23 13:33:15,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:15,279 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:33:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:33:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash -160848100, now seen corresponding path program 7 times [2022-07-23 13:33:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:33:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276665900] [2022-07-23 13:33:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:33:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:33:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:33:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:33:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-23 13:33:16,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:33:16,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276665900] [2022-07-23 13:33:16,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276665900] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:16,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734187420] [2022-07-23 13:33:16,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:33:16,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:16,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:33:16,043 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) [2022-07-23 13:33:16,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-23 13:33:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:16,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-23 13:33:16,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:33:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 6 proven. 647 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-23 13:33:17,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:33:19,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734187420] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:19,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:33:19,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2022-07-23 13:33:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477447467] [2022-07-23 13:33:19,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:33:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-23 13:33:19,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:33:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-23 13:33:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2022-07-23 13:33:19,565 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-23 13:33:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:33:22,533 INFO L93 Difference]: Finished difference Result 302 states and 326 transitions. [2022-07-23 13:33:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-23 13:33:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) Word has length 158 [2022-07-23 13:33:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:33:22,535 INFO L225 Difference]: With dead ends: 302 [2022-07-23 13:33:22,535 INFO L226 Difference]: Without dead ends: 299 [2022-07-23 13:33:22,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=657, Invalid=7533, Unknown=0, NotChecked=0, Total=8190 [2022-07-23 13:33:22,536 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 206 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:33:22,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 837 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-23 13:33:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-23 13:33:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2022-07-23 13:33:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 197 states have (on average 1.0355329949238579) internal successors, (204), 196 states have internal predecessors, (204), 9 states have call successors, (9), 6 states have call predecessors, (9), 40 states have return successors, (57), 44 states have call predecessors, (57), 7 states have call successors, (57) [2022-07-23 13:33:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 270 transitions. [2022-07-23 13:33:22,546 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 270 transitions. Word has length 158 [2022-07-23 13:33:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:33:22,547 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 270 transitions. [2022-07-23 13:33:22,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.6744186046511627) internal successors, (115), 43 states have internal predecessors, (115), 7 states have call successors, (8), 2 states have call predecessors, (8), 13 states have return successors, (25), 24 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-23 13:33:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 270 transitions. [2022-07-23 13:33:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-23 13:33:22,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:33:22,549 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:33:22,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-23 13:33:22,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-23 13:33:22,763 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:33:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:33:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash -286686319, now seen corresponding path program 10 times [2022-07-23 13:33:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:33:22,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29360219] [2022-07-23 13:33:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:33:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:33:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:22,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-23 13:33:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-23 13:33:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:33:23,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29360219] [2022-07-23 13:33:23,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29360219] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:23,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508391891] [2022-07-23 13:33:23,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:33:23,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:23,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:33:23,854 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) [2022-07-23 13:33:23,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-23 13:33:24,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:33:24,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:33:24,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-23 13:33:24,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:33:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-23 13:33:25,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:33:30,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508391891] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:30,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:33:30,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2022-07-23 13:33:30,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935653166] [2022-07-23 13:33:30,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:33:30,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-23 13:33:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:33:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-23 13:33:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2694, Unknown=0, NotChecked=0, Total=2862 [2022-07-23 13:33:30,855 INFO L87 Difference]: Start difference. First operand 247 states and 270 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-23 13:33:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:33:34,531 INFO L93 Difference]: Finished difference Result 374 states and 410 transitions. [2022-07-23 13:33:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-07-23 13:33:34,531 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) Word has length 184 [2022-07-23 13:33:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:33:34,533 INFO L225 Difference]: With dead ends: 374 [2022-07-23 13:33:34,533 INFO L226 Difference]: Without dead ends: 373 [2022-07-23 13:33:34,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 189 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=612, Invalid=9894, Unknown=0, NotChecked=0, Total=10506 [2022-07-23 13:33:34,535 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 331 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:33:34,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 989 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-23 13:33:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-23 13:33:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 252. [2022-07-23 13:33:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 200 states have internal predecessors, (208), 9 states have call successors, (9), 6 states have call predecessors, (9), 41 states have return successors, (59), 45 states have call predecessors, (59), 7 states have call successors, (59) [2022-07-23 13:33:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 276 transitions. [2022-07-23 13:33:34,546 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 276 transitions. Word has length 184 [2022-07-23 13:33:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:33:34,546 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 276 transitions. [2022-07-23 13:33:34,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 4 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (30), 30 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-23 13:33:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 276 transitions. [2022-07-23 13:33:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-23 13:33:34,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:33:34,548 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 13, 13, 13, 13, 13, 13, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:33:34,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-23 13:33:34,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-23 13:33:34,780 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:33:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:33:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1765819050, now seen corresponding path program 8 times [2022-07-23 13:33:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:33:34,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399098249] [2022-07-23 13:33:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:33:34,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:33:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:33:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-23 13:33:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 2 proven. 583 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-23 13:33:35,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:33:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399098249] [2022-07-23 13:33:35,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399098249] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793249081] [2022-07-23 13:33:35,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:33:35,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:33:35,712 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) [2022-07-23 13:33:35,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-23 13:33:36,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:33:36,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:33:36,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-23 13:33:36,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:33:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 169 proven. 410 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-23 13:33:37,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:33:39,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793249081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:39,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:33:39,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 48 [2022-07-23 13:33:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952903222] [2022-07-23 13:33:39,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:33:39,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-23 13:33:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:33:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-23 13:33:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2396, Unknown=0, NotChecked=0, Total=2550 [2022-07-23 13:33:39,878 INFO L87 Difference]: Start difference. First operand 252 states and 276 transitions. Second operand has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-23 13:33:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:33:44,494 INFO L93 Difference]: Finished difference Result 330 states and 357 transitions. [2022-07-23 13:33:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-23 13:33:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) Word has length 157 [2022-07-23 13:33:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:33:44,496 INFO L225 Difference]: With dead ends: 330 [2022-07-23 13:33:44,497 INFO L226 Difference]: Without dead ends: 323 [2022-07-23 13:33:44,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 161 SyntacticMatches, 10 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1092, Invalid=14408, Unknown=0, NotChecked=0, Total=15500 [2022-07-23 13:33:44,498 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 361 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:33:44,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 974 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-23 13:33:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-23 13:33:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 184. [2022-07-23 13:33:44,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 147 states have (on average 1.034013605442177) internal successors, (152), 146 states have internal predecessors, (152), 6 states have call successors, (6), 4 states have call predecessors, (6), 30 states have return successors, (47), 33 states have call predecessors, (47), 5 states have call successors, (47) [2022-07-23 13:33:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2022-07-23 13:33:44,509 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 157 [2022-07-23 13:33:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:33:44,509 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2022-07-23 13:33:44,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7291666666666665) internal successors, (131), 47 states have internal predecessors, (131), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (28), 28 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-23 13:33:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2022-07-23 13:33:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-23 13:33:44,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:33:44,511 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:33:44,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-23 13:33:44,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-23 13:33:44,736 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:33:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:33:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1506724331, now seen corresponding path program 11 times [2022-07-23 13:33:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:33:44,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738901785] [2022-07-23 13:33:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:33:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:33:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:33:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-23 13:33:45,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:33:45,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738901785] [2022-07-23 13:33:45,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738901785] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:45,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363327703] [2022-07-23 13:33:45,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:33:45,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:45,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:33:45,822 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) [2022-07-23 13:33:45,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-23 13:33:46,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-07-23 13:33:46,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:33:46,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-23 13:33:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:33:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-07-23 13:33:47,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:33:53,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363327703] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:53,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:33:53,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-07-23 13:33:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669483504] [2022-07-23 13:33:53,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:33:53,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-23 13:33:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:33:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-23 13:33:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3014, Unknown=0, NotChecked=0, Total=3192 [2022-07-23 13:33:53,248 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 13:33:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:33:56,983 INFO L93 Difference]: Finished difference Result 295 states and 321 transitions. [2022-07-23 13:33:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-23 13:33:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) Word has length 183 [2022-07-23 13:33:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:33:56,985 INFO L225 Difference]: With dead ends: 295 [2022-07-23 13:33:56,985 INFO L226 Difference]: Without dead ends: 294 [2022-07-23 13:33:56,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 184 SyntacticMatches, 15 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=635, Invalid=10921, Unknown=0, NotChecked=0, Total=11556 [2022-07-23 13:33:56,986 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 244 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:33:56,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1060 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-23 13:33:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-23 13:33:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 189. [2022-07-23 13:33:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 151 states have (on average 1.033112582781457) internal successors, (156), 150 states have internal predecessors, (156), 6 states have call successors, (6), 4 states have call predecessors, (6), 31 states have return successors, (49), 34 states have call predecessors, (49), 5 states have call successors, (49) [2022-07-23 13:33:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 211 transitions. [2022-07-23 13:33:56,994 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 211 transitions. Word has length 183 [2022-07-23 13:33:56,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:33:56,995 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 211 transitions. [2022-07-23 13:33:56,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.4444444444444446) internal successors, (132), 54 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 16 states have return successors, (32), 32 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 13:33:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 211 transitions. [2022-07-23 13:33:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-23 13:33:56,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:33:56,997 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 15, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:33:57,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-23 13:33:57,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:57,217 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:33:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:33:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash -160493286, now seen corresponding path program 9 times [2022-07-23 13:33:57,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:33:57,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297997003] [2022-07-23 13:33:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:33:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:33:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:33:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:33:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:33:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:33:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 6 proven. 828 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-07-23 13:33:58,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:33:58,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297997003] [2022-07-23 13:33:58,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297997003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:33:58,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108226483] [2022-07-23 13:33:58,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:33:58,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:33:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:33:58,083 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) [2022-07-23 13:33:58,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-23 13:33:58,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-07-23 13:33:58,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:33:58,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-23 13:33:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:33:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 201 proven. 627 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2022-07-23 13:33:59,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:03,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108226483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:03,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:34:03,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31] total 51 [2022-07-23 13:34:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866560071] [2022-07-23 13:34:03,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-23 13:34:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-23 13:34:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2698, Unknown=0, NotChecked=0, Total=2862 [2022-07-23 13:34:03,208 INFO L87 Difference]: Start difference. First operand 189 states and 211 transitions. Second operand has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-23 13:34:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:08,418 INFO L93 Difference]: Finished difference Result 348 states and 374 transitions. [2022-07-23 13:34:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-23 13:34:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) Word has length 180 [2022-07-23 13:34:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:08,420 INFO L225 Difference]: With dead ends: 348 [2022-07-23 13:34:08,421 INFO L226 Difference]: Without dead ends: 343 [2022-07-23 13:34:08,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 188 SyntacticMatches, 11 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1178, Invalid=16644, Unknown=0, NotChecked=0, Total=17822 [2022-07-23 13:34:08,423 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 341 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:08,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1093 Invalid, 5267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-23 13:34:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-23 13:34:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 194. [2022-07-23 13:34:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 155 states have (on average 1.032258064516129) internal successors, (160), 154 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 32 states have return successors, (50), 35 states have call predecessors, (50), 5 states have call successors, (50) [2022-07-23 13:34:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2022-07-23 13:34:08,441 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 180 [2022-07-23 13:34:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:08,441 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2022-07-23 13:34:08,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7058823529411766) internal successors, (138), 50 states have internal predecessors, (138), 8 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (30), 30 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-23 13:34:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2022-07-23 13:34:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-23 13:34:08,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:08,443 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:08,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:08,658 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:34:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1967692977, now seen corresponding path program 12 times [2022-07-23 13:34:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:08,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957868537] [2022-07-23 13:34:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:34:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-23 13:34:09,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:09,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957868537] [2022-07-23 13:34:09,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957868537] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:09,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125461601] [2022-07-23 13:34:09,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:34:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:09,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:09,800 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) [2022-07-23 13:34:09,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-23 13:34:10,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-07-23 13:34:10,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:34:10,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-23 13:34:10,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-23 13:34:11,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:18,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125461601] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:18,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:34:18,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2022-07-23 13:34:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511761390] [2022-07-23 13:34:18,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-23 13:34:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-23 13:34:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2022-07-23 13:34:18,795 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 13:34:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:23,124 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2022-07-23 13:34:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-23 13:34:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) Word has length 194 [2022-07-23 13:34:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:23,126 INFO L225 Difference]: With dead ends: 310 [2022-07-23 13:34:23,126 INFO L226 Difference]: Without dead ends: 309 [2022-07-23 13:34:23,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 195 SyntacticMatches, 16 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=672, Invalid=12210, Unknown=0, NotChecked=0, Total=12882 [2022-07-23 13:34:23,128 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 365 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 4880 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:23,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1223 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 4880 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-23 13:34:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-23 13:34:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 199. [2022-07-23 13:34:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 159 states have (on average 1.0314465408805031) internal successors, (164), 158 states have internal predecessors, (164), 6 states have call successors, (6), 4 states have call predecessors, (6), 33 states have return successors, (52), 36 states have call predecessors, (52), 5 states have call successors, (52) [2022-07-23 13:34:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 222 transitions. [2022-07-23 13:34:23,136 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 222 transitions. Word has length 194 [2022-07-23 13:34:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:23,136 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 222 transitions. [2022-07-23 13:34:23,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 4 states have call successors, (4), 2 states have call predecessors, (4), 17 states have return successors, (34), 34 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 13:34:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 222 transitions. [2022-07-23 13:34:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-23 13:34:23,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:23,146 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 15, 15, 15, 15, 15, 15, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:23,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:23,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-23 13:34:23,359 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:34:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:23,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1100004820, now seen corresponding path program 10 times [2022-07-23 13:34:23,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:23,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592379360] [2022-07-23 13:34:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:23,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-23 13:34:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-23 13:34:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-23 13:34:24,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:24,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592379360] [2022-07-23 13:34:24,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592379360] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:24,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307253267] [2022-07-23 13:34:24,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:34:24,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:24,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:24,330 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) [2022-07-23 13:34:24,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-23 13:34:24,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:34:24,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:34:24,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-23 13:34:24,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 2 proven. 750 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-23 13:34:26,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:30,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307253267] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:30,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:34:30,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 52 [2022-07-23 13:34:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776757335] [2022-07-23 13:34:30,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:30,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-23 13:34:30,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-23 13:34:30,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2802, Unknown=0, NotChecked=0, Total=2970 [2022-07-23 13:34:30,645 INFO L87 Difference]: Start difference. First operand 199 states and 222 transitions. Second operand has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-23 13:34:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:35,189 INFO L93 Difference]: Finished difference Result 362 states and 389 transitions. [2022-07-23 13:34:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-07-23 13:34:35,190 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) Word has length 179 [2022-07-23 13:34:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:35,192 INFO L225 Difference]: With dead ends: 362 [2022-07-23 13:34:35,192 INFO L226 Difference]: Without dead ends: 359 [2022-07-23 13:34:35,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 184 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=825, Invalid=11607, Unknown=0, NotChecked=0, Total=12432 [2022-07-23 13:34:35,194 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 254 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 5030 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 5232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 5030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:35,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1198 Invalid, 5232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 5030 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-23 13:34:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-23 13:34:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 292. [2022-07-23 13:34:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 233 states have (on average 1.0300429184549356) internal successors, (240), 232 states have internal predecessors, (240), 9 states have call successors, (9), 6 states have call predecessors, (9), 49 states have return successors, (69), 53 states have call predecessors, (69), 7 states have call successors, (69) [2022-07-23 13:34:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 318 transitions. [2022-07-23 13:34:35,206 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 318 transitions. Word has length 179 [2022-07-23 13:34:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:35,206 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 318 transitions. [2022-07-23 13:34:35,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.6153846153846154) internal successors, (136), 52 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 16 states have return successors, (31), 30 states have call predecessors, (31), 6 states have call successors, (31) [2022-07-23 13:34:35,206 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 318 transitions. [2022-07-23 13:34:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-23 13:34:35,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:35,208 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:35,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-23 13:34:35,436 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:34:35,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash -48529833, now seen corresponding path program 13 times [2022-07-23 13:34:35,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:35,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77893257] [2022-07-23 13:34:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:35,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 13:34:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-23 13:34:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-23 13:34:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77893257] [2022-07-23 13:34:36,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77893257] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200368471] [2022-07-23 13:34:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:34:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:36,768 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) [2022-07-23 13:34:36,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-23 13:34:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:37,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-23 13:34:37,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 887 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-07-23 13:34:38,976 INFO L328 TraceCheckSpWp]: Computing backward predicates...