./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e8d55036 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/termination-numeric/MultCommutative-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 2f58e1f128e4dbefcdb138e1f7ef5e4260326da20e0bd376d80fe12a55b55920 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:00:13,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:00:13,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:00:13,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:00:13,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:00:13,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:00:13,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:00:13,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:00:13,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:00:13,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:00:13,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:00:13,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:00:13,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:00:13,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:00:13,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:00:13,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:00:13,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:00:13,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:00:13,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:00:13,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:00:13,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:00:13,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:00:13,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:00:13,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:00:13,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:00:13,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:00:13,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:00:13,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:00:13,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:00:13,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:00:13,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:00:13,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:00:13,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:00:13,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:00:13,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:00:13,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:00:13,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:00:13,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:00:13,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:00:13,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:00:13,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:00:13,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 23:00:13,566 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:00:13,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:00:13,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:00:13,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:00:13,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 23:00:13,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 23:00:13,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:00:13,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:00:13,569 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:00:13,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:00:13,569 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:00:13,570 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:00:13,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 23:00:13,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:00:13,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:00:13,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 23:00:13,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:00:13,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:00:13,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 23:00:13,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 23:00:13,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:00:13,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 23:00:13,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 23:00:13,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 23:00:13,572 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 23:00:13,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 23:00:13,573 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 23:00:13,573 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f58e1f128e4dbefcdb138e1f7ef5e4260326da20e0bd376d80fe12a55b55920 [2023-02-15 23:00:13,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:00:13,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:00:13,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:00:13,859 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:00:13,860 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:00:13,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2023-02-15 23:00:14,984 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:00:15,176 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:00:15,176 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2023-02-15 23:00:15,181 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414c0d99c/5a25f4cd3d4e4b658686821197e3ba32/FLAGc0ab10391 [2023-02-15 23:00:15,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414c0d99c/5a25f4cd3d4e4b658686821197e3ba32 [2023-02-15 23:00:15,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:00:15,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:00:15,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:00:15,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:00:15,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:00:15,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c34692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15, skipping insertion in model container [2023-02-15 23:00:15,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:00:15,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:00:15,360 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2023-02-15 23:00:15,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:00:15,368 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:00:15,380 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2023-02-15 23:00:15,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:00:15,391 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:00:15,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15 WrapperNode [2023-02-15 23:00:15,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:00:15,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:00:15,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:00:15,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:00:15,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,412 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-15 23:00:15,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:00:15,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:00:15,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:00:15,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:00:15,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:00:15,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:00:15,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:00:15,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:00:15,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (1/1) ... [2023-02-15 23:00:15,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:00:15,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:15,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 23:00:15,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 23:00:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 23:00:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-15 23:00:15,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-15 23:00:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:00:15,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:00:15,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 23:00:15,529 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:00:15,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:00:15,650 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:00:15,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:00:15,655 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 23:00:15,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:00:15 BoogieIcfgContainer [2023-02-15 23:00:15,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:00:15,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 23:00:15,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 23:00:15,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 23:00:15,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:00:15" (1/3) ... [2023-02-15 23:00:15,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54abd28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:00:15, skipping insertion in model container [2023-02-15 23:00:15,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:00:15" (2/3) ... [2023-02-15 23:00:15,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54abd28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:00:15, skipping insertion in model container [2023-02-15 23:00:15,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:00:15" (3/3) ... [2023-02-15 23:00:15,664 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2023-02-15 23:00:15,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 23:00:15,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 23:00:15,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 23:00:15,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@357d3ae0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 23:00:15,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 23:00:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 23:00:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 23:00:15,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:15,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:15,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2023-02-15 23:00:15,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:15,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604059475] [2023-02-15 23:00:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:16,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:16,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604059475] [2023-02-15 23:00:16,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604059475] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:16,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:16,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 23:00:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539037714] [2023-02-15 23:00:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:16,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:00:16,136 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, 4 states have (on average 1.75) 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) [2023-02-15 23:00:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:16,271 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2023-02-15 23:00:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:00:16,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 [2023-02-15 23:00:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:16,281 INFO L225 Difference]: With dead ends: 81 [2023-02-15 23:00:16,281 INFO L226 Difference]: Without dead ends: 43 [2023-02-15 23:00:16,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:00:16,291 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:16,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-15 23:00:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-02-15 23:00:16,332 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) [2023-02-15 23:00:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-02-15 23:00:16,334 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2023-02-15 23:00:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:16,334 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-02-15 23:00:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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) [2023-02-15 23:00:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-02-15 23:00:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 23:00:16,335 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:16,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:16,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 23:00:16,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:16,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2023-02-15 23:00:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:16,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35476062] [2023-02-15 23:00:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:16,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:16,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35476062] [2023-02-15 23:00:16,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35476062] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:16,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:16,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:00:16,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397361761] [2023-02-15 23:00:16,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:00:16,419 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:00:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:16,494 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2023-02-15 23:00:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:00:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 23:00:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:16,496 INFO L225 Difference]: With dead ends: 59 [2023-02-15 23:00:16,497 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 23:00:16,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:00:16,498 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:16,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 23:00:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-02-15 23:00:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 23:00:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-15 23:00:16,513 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-02-15 23:00:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:16,513 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-15 23:00:16,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:00:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-15 23:00:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 23:00:16,517 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:16,517 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:16,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 23:00:16,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2023-02-15 23:00:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077041771] [2023-02-15 23:00:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:16,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:16,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077041771] [2023-02-15 23:00:16,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077041771] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:16,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:16,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:00:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209733221] [2023-02-15 23:00:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:00:16,583 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:00:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:16,650 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-02-15 23:00:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:00:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 23:00:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:16,652 INFO L225 Difference]: With dead ends: 77 [2023-02-15 23:00:16,652 INFO L226 Difference]: Without dead ends: 76 [2023-02-15 23:00:16,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:00:16,654 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:16,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-15 23:00:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-02-15 23:00:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 23:00:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-02-15 23:00:16,668 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-02-15 23:00:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:16,669 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-02-15 23:00:16,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:00:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-02-15 23:00:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 23:00:16,670 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:16,670 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:16,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 23:00:16,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2023-02-15 23:00:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:16,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496351216] [2023-02-15 23:00:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:00:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:16,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496351216] [2023-02-15 23:00:16,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496351216] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:16,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:16,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:00:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533190733] [2023-02-15 23:00:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:16,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:16,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:16,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:16,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:00:16,734 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:00:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:16,808 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-02-15 23:00:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:00:16,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 23:00:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:16,811 INFO L225 Difference]: With dead ends: 121 [2023-02-15 23:00:16,811 INFO L226 Difference]: Without dead ends: 85 [2023-02-15 23:00:16,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:00:16,813 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 [2023-02-15 23:00:16,814 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] [2023-02-15 23:00:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-15 23:00:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-02-15 23:00:16,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 23:00:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-02-15 23:00:16,836 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-02-15 23:00:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:16,836 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-02-15 23:00:16,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:00:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-02-15 23:00:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 23:00:16,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:16,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:16,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 23:00:16,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2023-02-15 23:00:16,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:16,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958770719] [2023-02-15 23:00:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:16,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:00:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:16,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:16,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958770719] [2023-02-15 23:00:16,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958770719] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:16,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:16,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:00:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403540091] [2023-02-15 23:00:16,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:16,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:16,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:00:16,930 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:00:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:17,027 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-15 23:00:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:00:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 23:00:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:17,029 INFO L225 Difference]: With dead ends: 102 [2023-02-15 23:00:17,029 INFO L226 Difference]: Without dead ends: 101 [2023-02-15 23:00:17,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:00:17,033 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:17,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 87 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-15 23:00:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-02-15 23:00:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 23:00:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-02-15 23:00:17,057 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-02-15 23:00:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:17,058 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-02-15 23:00:17,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:00:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-02-15 23:00:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 23:00:17,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:17,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:17,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 23:00:17,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2023-02-15 23:00:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:17,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64175856] [2023-02-15 23:00:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 23:00:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:17,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64175856] [2023-02-15 23:00:17,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64175856] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79491011] [2023-02-15 23:00:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:17,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:17,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:17,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:00:17,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 23:00:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:00:17,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:17,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:17,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79491011] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:17,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:00:17,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-15 23:00:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418973373] [2023-02-15 23:00:17,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:17,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:00:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:00:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:00:17,342 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 23:00:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:17,456 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-02-15 23:00:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:00:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-15 23:00:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:17,458 INFO L225 Difference]: With dead ends: 152 [2023-02-15 23:00:17,458 INFO L226 Difference]: Without dead ends: 151 [2023-02-15 23:00:17,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:00:17,460 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:17,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-15 23:00:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-02-15 23:00:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 23:00:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-02-15 23:00:17,482 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-02-15 23:00:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:17,485 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-02-15 23:00:17,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 23:00:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-02-15 23:00:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 23:00:17,487 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:17,487 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:17,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:17,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-15 23:00:17,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2023-02-15 23:00:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:17,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304587082] [2023-02-15 23:00:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:00:17,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304587082] [2023-02-15 23:00:17,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304587082] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:17,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:17,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 23:00:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306501930] [2023-02-15 23:00:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:17,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:17,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:00:17,755 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:00:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:17,799 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-02-15 23:00:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 23:00:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 23:00:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:17,802 INFO L225 Difference]: With dead ends: 163 [2023-02-15 23:00:17,802 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 23:00:17,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:00:17,808 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 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 [2023-02-15 23:00:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:17,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 23:00:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-15 23:00:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 23:00:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-15 23:00:17,822 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-02-15 23:00:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:17,822 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-15 23:00:17,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:00:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-15 23:00:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 23:00:17,825 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:17,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:17,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 23:00:17,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2023-02-15 23:00:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:17,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846352642] [2023-02-15 23:00:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 23:00:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:17,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:17,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846352642] [2023-02-15 23:00:17,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846352642] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:17,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125377458] [2023-02-15 23:00:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:17,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:00:17,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 23:00:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:17,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:00:17,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:18,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:00:18,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125377458] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:18,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:00:18,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-02-15 23:00:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266335123] [2023-02-15 23:00:18,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 23:00:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 23:00:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-15 23:00:18,110 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:00:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:18,193 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-15 23:00:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 23:00:18,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-02-15 23:00:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:18,195 INFO L225 Difference]: With dead ends: 65 [2023-02-15 23:00:18,195 INFO L226 Difference]: Without dead ends: 64 [2023-02-15 23:00:18,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:00:18,199 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:18,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 85 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-15 23:00:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-02-15 23:00:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 23:00:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-02-15 23:00:18,216 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-02-15 23:00:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:18,216 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-02-15 23:00:18,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:00:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-02-15 23:00:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 23:00:18,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:18,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:18,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:18,424 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 [2023-02-15 23:00:18,425 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:18,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2023-02-15 23:00:18,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:18,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863707687] [2023-02-15 23:00:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:00:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 23:00:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 23:00:18,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:18,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863707687] [2023-02-15 23:00:18,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863707687] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:18,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652316502] [2023-02-15 23:00:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:18,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:18,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:18,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:00:18,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 23:00:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:18,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:00:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 23:00:18,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 23:00:18,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652316502] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:18,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:00:18,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-15 23:00:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94034515] [2023-02-15 23:00:18,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:18,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:00:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:00:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:00:18,665 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:00:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:18,757 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-02-15 23:00:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:00:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-15 23:00:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:18,760 INFO L225 Difference]: With dead ends: 71 [2023-02-15 23:00:18,760 INFO L226 Difference]: Without dead ends: 70 [2023-02-15 23:00:18,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:00:18,763 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:18,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 128 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-15 23:00:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-02-15 23:00:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.127659574468085) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 23:00:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-02-15 23:00:18,778 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-02-15 23:00:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:18,779 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-02-15 23:00:18,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:00:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-02-15 23:00:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 23:00:18,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:18,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:18,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:18,987 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 [2023-02-15 23:00:18,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2023-02-15 23:00:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:18,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961044479] [2023-02-15 23:00:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:00:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 23:00:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:00:19,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:19,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961044479] [2023-02-15 23:00:19,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961044479] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:19,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284288967] [2023-02-15 23:00:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:19,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:19,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:19,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:00:19,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 23:00:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:19,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:00:19,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:00:19,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:00:19,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284288967] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:19,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:00:19,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-15 23:00:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424344487] [2023-02-15 23:00:19,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 23:00:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 23:00:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:00:19,337 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:00:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:19,488 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-02-15 23:00:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:00:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-02-15 23:00:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:19,490 INFO L225 Difference]: With dead ends: 93 [2023-02-15 23:00:19,490 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 23:00:19,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-15 23:00:19,491 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:19,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 80 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 23:00:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-15 23:00:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 23:00:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-15 23:00:19,500 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-02-15 23:00:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:19,500 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-15 23:00:19,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:00:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-15 23:00:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 23:00:19,501 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:19,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:19,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:19,706 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 [2023-02-15 23:00:19,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:00:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2023-02-15 23:00:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:19,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716397886] [2023-02-15 23:00:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:00:19,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:00:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:00:19,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:00:19,743 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 23:00:19,744 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-02-15 23:00:19,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-02-15 23:00:19,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-02-15 23:00:19,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-02-15 23:00:19,746 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-02-15 23:00:19,747 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-02-15 23:00:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 23:00:19,751 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:19,754 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 23:00:19,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 11:00:19 BoogieIcfgContainer [2023-02-15 23:00:19,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 23:00:19,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:00:19,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:00:19,782 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:00:19,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:00:15" (3/4) ... [2023-02-15 23:00:19,783 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 23:00:19,813 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 23:00:19,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:00:19,814 INFO L158 Benchmark]: Toolchain (without parser) took 4616.33ms. Allocated memory was 130.0MB in the beginning and 192.9MB in the end (delta: 62.9MB). Free memory was 86.4MB in the beginning and 125.5MB in the end (delta: -39.0MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2023-02-15 23:00:19,814 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory was 99.4MB in the beginning and 99.4MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:00:19,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.63ms. Allocated memory is still 130.0MB. Free memory was 86.4MB in the beginning and 76.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 23:00:19,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.04ms. Allocated memory is still 130.0MB. Free memory was 76.3MB in the beginning and 74.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:00:19,815 INFO L158 Benchmark]: Boogie Preprocessor took 12.81ms. Allocated memory is still 130.0MB. Free memory was 74.8MB in the beginning and 73.8MB in the end (delta: 985.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:00:19,815 INFO L158 Benchmark]: RCFGBuilder took 230.46ms. Allocated memory is still 130.0MB. Free memory was 73.8MB in the beginning and 63.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 23:00:19,815 INFO L158 Benchmark]: TraceAbstraction took 4122.39ms. Allocated memory was 130.0MB in the beginning and 192.9MB in the end (delta: 62.9MB). Free memory was 62.7MB in the beginning and 127.6MB in the end (delta: -64.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:00:19,816 INFO L158 Benchmark]: Witness Printer took 32.34ms. Allocated memory is still 192.9MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:00:19,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory was 99.4MB in the beginning and 99.4MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.63ms. Allocated memory is still 130.0MB. Free memory was 86.4MB in the beginning and 76.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.04ms. Allocated memory is still 130.0MB. Free memory was 76.3MB in the beginning and 74.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.81ms. Allocated memory is still 130.0MB. Free memory was 74.8MB in the beginning and 73.8MB in the end (delta: 985.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.46ms. Allocated memory is still 130.0MB. Free memory was 73.8MB in the beginning and 63.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4122.39ms. Allocated memory was 130.0MB in the beginning and 192.9MB in the end (delta: 62.9MB). Free memory was 62.7MB in the beginning and 127.6MB in the end (delta: -64.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.34ms. Allocated memory is still 192.9MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0) [L32] int n = __VERIFIER_nondet_int(); [L33] COND FALSE !(n < 0) VAL [m=1073741824, n=2] [L36] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L21] COND TRUE m == 0 [L22] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L24] EXPR n + mult(n, m - 1) [L24] return n + mult(n, m - 1); [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L24] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 852 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 607 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 683 IncrementalHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 245 mSDtfsCounter, 683 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 176 SyntacticMatches, 17 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=6, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 95 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 8 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 45/99 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-15 23:00:19,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)