./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec 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-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:56:39,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:56:39,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:56:39,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:56:39,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:56:39,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:56:39,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:56:39,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:56:39,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:56:39,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:56:39,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:56:39,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:56:39,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:56:39,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:56:39,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:56:39,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:56:39,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:56:39,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:56:39,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:56:39,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:56:39,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:56:39,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:56:39,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:56:39,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:56:39,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:56:39,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:56:39,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:56:39,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:56:39,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:56:39,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:56:39,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:56:39,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:56:39,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:56:39,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:56:39,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:56:39,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:56:39,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:56:39,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:56:39,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:56:39,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:56:39,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:56:39,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:56:39,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:56:39,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:56:39,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:56:39,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:56:39,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:56:39,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:56:39,701 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:56:39,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:56:39,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:56:39,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:56:39,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:56:39,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:56:39,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:56:39,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:56:39,703 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:56:39,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:56:39,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:56:39,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:56:39,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:56:39,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:56:39,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:56:39,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:39,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:56:39,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:56:39,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:56:39,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:56:39,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:56:39,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:56:39,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:56:39,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2021-08-27 10:56:39,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:56:40,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:56:40,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:56:40,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:56:40,016 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:56:40,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-08-27 10:56:40,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ece09e0/8c94ed2eff46431a99b5b1d7ae14bd2b/FLAG0139f04c7 [2021-08-27 10:56:40,474 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:56:40,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-08-27 10:56:40,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ece09e0/8c94ed2eff46431a99b5b1d7ae14bd2b/FLAG0139f04c7 [2021-08-27 10:56:40,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3ece09e0/8c94ed2eff46431a99b5b1d7ae14bd2b [2021-08-27 10:56:40,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:56:40,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:56:40,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:40,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:56:40,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:56:40,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ac13bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40, skipping insertion in model container [2021-08-27 10:56:40,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:56:40,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:56:40,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:40,592 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:56:40,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:56:40,607 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:56:40,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40 WrapperNode [2021-08-27 10:56:40,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:56:40,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:40,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:56:40,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:56:40,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:56:40,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:56:40,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:56:40,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:56:40,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:56:40,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:56:40,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:56:40,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:56:40,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (1/1) ... [2021-08-27 10:56:40,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:56:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:40,695 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) [2021-08-27 10:56:40,739 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 [2021-08-27 10:56:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:56:40,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:56:40,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:56:40,899 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 10:56:40,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:40 BoogieIcfgContainer [2021-08-27 10:56:40,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:56:40,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:56:40,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:56:40,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:56:40,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:56:40" (1/3) ... [2021-08-27 10:56:40,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55caf905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:40, skipping insertion in model container [2021-08-27 10:56:40,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:40" (2/3) ... [2021-08-27 10:56:40,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55caf905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:40, skipping insertion in model container [2021-08-27 10:56:40,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:40" (3/3) ... [2021-08-27 10:56:40,917 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2021-08-27 10:56:40,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:56:40,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:56:40,958 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:56:40,967 INFO L339 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 10:56:40,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:56:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:56:40,994 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:40,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:56:40,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:40,999 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2021-08-27 10:56:41,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497885540] [2021-08-27 10:56:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497885540] [2021-08-27 10:56:41,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497885540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:41,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:41,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:56:41,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084347599] [2021-08-27 10:56:41,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:41,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,118 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,137 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2021-08-27 10:56:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-27 10:56:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,143 INFO L225 Difference]: With dead ends: 28 [2021-08-27 10:56:41,143 INFO L226 Difference]: Without dead ends: 10 [2021-08-27 10:56:41,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-27 10:56:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-08-27 10:56:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-08-27 10:56:41,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-08-27 10:56:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,162 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-08-27 10:56:41,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-08-27 10:56:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:56:41,163 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:41,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:56:41,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:56:41,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:41,167 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-08-27 10:56:41,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677587926] [2021-08-27 10:56:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677587926] [2021-08-27 10:56:41,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677587926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:41,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:41,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:41,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127468468] [2021-08-27 10:56:41,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:41,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,208 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,223 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-08-27 10:56:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-27 10:56:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,224 INFO L225 Difference]: With dead ends: 18 [2021-08-27 10:56:41,224 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 10:56:41,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 10:56:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-08-27 10:56:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-27 10:56:41,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2021-08-27 10:56:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,227 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-27 10:56:41,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-27 10:56:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:56:41,228 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:41,228 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:56:41,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:56:41,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:41,229 INFO L82 PathProgramCache]: Analyzing trace with hash 29867816, now seen corresponding path program 1 times [2021-08-27 10:56:41,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387758806] [2021-08-27 10:56:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387758806] [2021-08-27 10:56:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387758806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:41,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339963936] [2021-08-27 10:56:41,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:41,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,247 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,253 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-08-27 10:56:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:56:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,255 INFO L225 Difference]: With dead ends: 12 [2021-08-27 10:56:41,255 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 10:56:41,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 10:56:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 10:56:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-08-27 10:56:41,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2021-08-27 10:56:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,258 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-08-27 10:56:41,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-08-27 10:56:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:56:41,258 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:41,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:56:41,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:56:41,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:41,260 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-08-27 10:56:41,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7942751] [2021-08-27 10:56:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7942751] [2021-08-27 10:56:41,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7942751] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:56:41,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:56:41,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:56:41,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265556254] [2021-08-27 10:56:41,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:56:41,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:56:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,277 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,285 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-08-27 10:56:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:56:41,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:56:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,286 INFO L225 Difference]: With dead ends: 12 [2021-08-27 10:56:41,286 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 10:56:41,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:56:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 10:56:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-08-27 10:56:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-08-27 10:56:41,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2021-08-27 10:56:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,289 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-08-27 10:56:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-08-27 10:56:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:56:41,290 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:41,290 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-08-27 10:56:41,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 10:56:41,290 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2021-08-27 10:56:41,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699256483] [2021-08-27 10:56:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699256483] [2021-08-27 10:56:41,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699256483] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:41,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132236046] [2021-08-27 10:56:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:41,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:41,349 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) [2021-08-27 10:56:41,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:56:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:56:41,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132236046] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:41,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:41,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:56:41,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210826557] [2021-08-27 10:56:41,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:56:41,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:56:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:56:41,471 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,523 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-08-27 10:56:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:56:41,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-27 10:56:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,524 INFO L225 Difference]: With dead ends: 21 [2021-08-27 10:56:41,524 INFO L226 Difference]: Without dead ends: 20 [2021-08-27 10:56:41,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:56:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-27 10:56:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2021-08-27 10:56:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-08-27 10:56:41,527 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2021-08-27 10:56:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,527 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-08-27 10:56:41,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-08-27 10:56:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:56:41,528 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:41,528 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-08-27 10:56:41,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:41,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:41,742 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:56:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:41,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2000108501, now seen corresponding path program 2 times [2021-08-27 10:56:41,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096295121] [2021-08-27 10:56:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:41,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096295121] [2021-08-27 10:56:41,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096295121] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:41,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036358985] [2021-08-27 10:56:41,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:56:41,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:41,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:41,779 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) [2021-08-27 10:56:41,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:56:41,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 10:56:41,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:41,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:56:41,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 10:56:41,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036358985] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:41,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:41,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2021-08-27 10:56:41,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989301440] [2021-08-27 10:56:41,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:56:41,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:56:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:56:41,840 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,898 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-08-27 10:56:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:56:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:56:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,898 INFO L225 Difference]: With dead ends: 30 [2021-08-27 10:56:41,898 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:56:41,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:56:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:56:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:56:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:56:41,899 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-08-27 10:56:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,899 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:56:41,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:56:41,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:56:41,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:41,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:41,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:41,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:56:41,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:42,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-27 10:56:42,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:56:42,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:42,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:42,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:56:42,174 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-27 10:56:42,174 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:56:42,174 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:56:42,175 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-08-27 10:56:42,175 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2021-08-27 10:56:42,175 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-27 10:56:42,175 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2021-08-27 10:56:42,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-27 10:56:42,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 10:56:42,175 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:56:42,176 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:56:42,176 INFO L853 garLoopResultBuilder]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-27 10:56:42,176 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-27 10:56:42,176 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-08-27 10:56:42,176 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-08-27 10:56:42,179 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:56:42,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:56:42 BoogieIcfgContainer [2021-08-27 10:56:42,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:56:42,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:56:42,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:56:42,206 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:56:42,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:40" (3/4) ... [2021-08-27 10:56:42,209 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:56:42,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:56:42,219 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 10:56:42,266 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:56:42,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:56:42,268 INFO L168 Benchmark]: Toolchain (without parser) took 1776.22 ms. Allocated memory was 67.1 MB in the beginning and 100.7 MB in the end (delta: 33.6 MB). Free memory was 48.6 MB in the beginning and 38.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:42,268 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:42,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 106.23 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 39.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:42,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.43 ms. Allocated memory is still 67.1 MB. Free memory was 39.9 MB in the beginning and 38.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:56:42,271 INFO L168 Benchmark]: Boogie Preprocessor took 13.34 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 37.7 MB in the end (delta: 967.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:42,271 INFO L168 Benchmark]: RCFGBuilder took 263.09 ms. Allocated memory is still 67.1 MB. Free memory was 37.7 MB in the beginning and 43.2 MB in the end (delta: -5.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:42,271 INFO L168 Benchmark]: TraceAbstraction took 1303.05 ms. Allocated memory was 67.1 MB in the beginning and 100.7 MB in the end (delta: 33.6 MB). Free memory was 42.7 MB in the beginning and 40.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:42,272 INFO L168 Benchmark]: Witness Printer took 61.15 ms. Allocated memory is still 100.7 MB. Free memory was 40.6 MB in the beginning and 38.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:56:42,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 106.23 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 39.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 15.43 ms. Allocated memory is still 67.1 MB. Free memory was 39.9 MB in the beginning and 38.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.34 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 37.7 MB in the end (delta: 967.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 263.09 ms. Allocated memory is still 67.1 MB. Free memory was 37.7 MB in the beginning and 43.2 MB in the end (delta: -5.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1303.05 ms. Allocated memory was 67.1 MB in the beginning and 100.7 MB in the end (delta: 33.6 MB). Free memory was 42.7 MB in the beginning and 40.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. * Witness Printer took 61.15 ms. Allocated memory is still 100.7 MB. Free memory was 40.6 MB in the beginning and 38.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1228.9ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 20.3ms, AutomataDifference: 186.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 54.9ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 58 SDslu, 7 SDs, 0 SdLazy, 79 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 513 FormulaSimplificationTreeSizeReduction, 44.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 7.5ms SsaConstructionTime, 39.7ms SatisfiabilityAnalysisTime, 214.7ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 1 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 5/18 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && 0 <= x) && x <= 2147483647 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:56:42,299 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...