./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8d31f386 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/cstrncmp.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 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:10:55,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:10:55,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:10:55,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:10:55,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:10:55,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:10:55,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:10:55,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:10:55,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:10:55,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:10:55,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:10:55,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:10:55,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:10:55,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:10:55,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:10:55,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:10:55,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:10:55,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:10:55,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:10:55,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:10:55,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:10:55,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:10:55,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:10:55,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:10:55,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:10:55,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:10:55,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:10:55,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:10:55,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:10:55,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:10:55,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:10:55,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:10:55,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:10:55,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:10:55,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:10:55,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:10:55,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:10:55,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:10:55,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:10:55,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:10:55,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:10:55,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:10:55,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:10:55,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:10:55,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:10:55,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:10:55,756 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:10:55,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:10:55,757 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:10:55,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:10:55,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:10:55,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:10:55,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:10:55,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:10:55,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:10:55,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:10:55,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:10:55,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:10:55,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:10:55,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:10:55,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:10:55,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:10:55,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:10:55,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2021-07-06 15:10:55,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:10:55,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:10:55,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:10:55,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:10:55,986 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:10:55,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-07-06 15:10:56,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be72993f/cb5ae87bc9004ca88e40ac160937b453/FLAG8bf283f91 [2021-07-06 15:10:56,464 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:10:56,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-07-06 15:10:56,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be72993f/cb5ae87bc9004ca88e40ac160937b453/FLAG8bf283f91 [2021-07-06 15:10:56,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be72993f/cb5ae87bc9004ca88e40ac160937b453 [2021-07-06 15:10:56,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:10:56,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:10:56,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:10:56,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:10:56,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:10:56,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5810573e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56, skipping insertion in model container [2021-07-06 15:10:56,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:10:56,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:10:56,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:10:56,628 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:10:56,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:10:56,652 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:10:56,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56 WrapperNode [2021-07-06 15:10:56,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:10:56,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:10:56,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:10:56,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:10:56,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:10:56,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:10:56,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:10:56,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:10:56,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:10:56,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:10:56,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:10:56,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:10:56,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (1/1) ... [2021-07-06 15:10:56,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:10:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:10:56,752 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) [2021-07-06 15:10:56,768 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 [2021-07-06 15:10:56,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 15:10:56,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 15:10:56,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:10:56,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:10:56,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 15:10:57,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:10:57,033 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-07-06 15:10:57,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:10:57 BoogieIcfgContainer [2021-07-06 15:10:57,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:10:57,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:10:57,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:10:57,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:10:57,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:10:56" (1/3) ... [2021-07-06 15:10:57,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17508e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:10:57, skipping insertion in model container [2021-07-06 15:10:57,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:56" (2/3) ... [2021-07-06 15:10:57,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17508e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:10:57, skipping insertion in model container [2021-07-06 15:10:57,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:10:57" (3/3) ... [2021-07-06 15:10:57,039 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2021-07-06 15:10:57,042 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:10:57,057 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-07-06 15:10:57,092 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:57,098 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:57,098 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:10:57,117 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,117 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:10:57,118 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,123 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-07-06 15:10:57,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308176562] [2021-07-06 15:10:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308176562] [2021-07-06 15:10:57,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308176562] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124648031] [2021-07-06 15:10:57,228 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,239 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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), 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) [2021-07-06 15:10:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,329 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2021-07-06 15:10:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,330 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 [2021-07-06 15:10:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,335 INFO L225 Difference]: With dead ends: 77 [2021-07-06 15:10:57,335 INFO L226 Difference]: Without dead ends: 5 [2021-07-06 15:10:57,338 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2021-07-06 15:10:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-07-06 15:10:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2021-07-06 15:10:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2021-07-06 15:10:57,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 4 [2021-07-06 15:10:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,358 INFO L442 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2021-07-06 15:10:57,358 INFO L443 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) [2021-07-06 15:10:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2021-07-06 15:10:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:10:57,358 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,359 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:10:57,359 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:10:57,359 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-07-06 15:10:57,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968764711] [2021-07-06 15:10:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968764711] [2021-07-06 15:10:57,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968764711] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731158473] [2021-07-06 15:10:57,395 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,396 INFO L87 Difference]: Start difference. First operand 5 states and 4 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) [2021-07-06 15:10:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,398 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2021-07-06 15:10:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,398 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 [2021-07-06 15:10:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,398 INFO L225 Difference]: With dead ends: 5 [2021-07-06 15:10:57,398 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:57,399 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:57,399 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) [2021-07-06 15:10:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:57,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-07-06 15:10:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,400 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:57,400 INFO L443 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) [2021-07-06 15:10:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:57,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:57,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:57,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,426 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,427 INFO L765 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: true [2021-07-06 15:10:57,427 INFO L765 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2021-07-06 15:10:57,427 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,427 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:57,440 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:57,440 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,441 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,442 INFO L765 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: true [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,443 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,444 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,444 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,444 INFO L765 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: true [2021-07-06 15:10:57,444 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,444 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,444 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,445 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,445 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,445 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,445 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,445 INFO L765 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: true [2021-07-06 15:10:57,445 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 15:10:57,445 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:57,448 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/10) [2021-07-06 15:10:57,450 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:57,450 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:57,450 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 15:10:57,452 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,452 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 15:10:57,452 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,453 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2021-07-06 15:10:57,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590309370] [2021-07-06 15:10:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590309370] [2021-07-06 15:10:57,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590309370] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151412677] [2021-07-06 15:10:57,479 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,480 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 2.5) 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) [2021-07-06 15:10:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,524 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-07-06 15:10:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,525 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 [2021-07-06 15:10:57,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,525 INFO L225 Difference]: With dead ends: 46 [2021-07-06 15:10:57,525 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:57,526 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:57,526 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) [2021-07-06 15:10:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:57,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 15:10:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,527 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:57,527 INFO L443 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) [2021-07-06 15:10:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:57,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:57,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:57,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,537 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,537 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,538 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,538 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,538 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:57,538 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:57,538 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,538 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,538 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,539 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,539 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,539 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,539 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,539 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,539 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,540 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,540 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,540 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,540 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,540 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,540 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,540 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,541 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,542 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,543 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,543 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,543 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-06 15:10:57,544 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:57,545 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/10) [2021-07-06 15:10:57,546 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:57,553 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:57,553 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:10:57,554 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,555 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:10:57,555 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,555 INFO L82 PathProgramCache]: Analyzing trace with hash 889509673, now seen corresponding path program 1 times [2021-07-06 15:10:57,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970213840] [2021-07-06 15:10:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970213840] [2021-07-06 15:10:57,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970213840] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418494796] [2021-07-06 15:10:57,594 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,595 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-07-06 15:10:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,651 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2021-07-06 15:10:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-07-06 15:10:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,652 INFO L225 Difference]: With dead ends: 77 [2021-07-06 15:10:57,652 INFO L226 Difference]: Without dead ends: 7 [2021-07-06 15:10:57,653 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-07-06 15:10:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-07-06 15:10:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-07-06 15:10:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-07-06 15:10:57,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-07-06 15:10:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,654 INFO L442 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-07-06 15:10:57,654 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-07-06 15:10:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-07-06 15:10:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:10:57,655 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,655 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:10:57,658 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-06 15:10:57,658 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,659 INFO L82 PathProgramCache]: Analyzing trace with hash 889569255, now seen corresponding path program 1 times [2021-07-06 15:10:57,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37073394] [2021-07-06 15:10:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37073394] [2021-07-06 15:10:57,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37073394] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759035826] [2021-07-06 15:10:57,693 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,694 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-07-06 15:10:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,703 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-07-06 15:10:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-07-06 15:10:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,704 INFO L225 Difference]: With dead ends: 7 [2021-07-06 15:10:57,704 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:57,704 INFO L795 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 [2021-07-06 15:10:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:57,705 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) [2021-07-06 15:10:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:57,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-06 15:10:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,705 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:57,706 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-07-06 15:10:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:57,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:57,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:57,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,712 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,712 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,712 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,712 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,712 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:57,712 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,714 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,715 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,715 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,726 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,726 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,726 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,727 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:57,727 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,727 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,727 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,727 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,727 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,727 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,728 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,729 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-06 15:10:57,729 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:57,729 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (3/10) [2021-07-06 15:10:57,730 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:57,730 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:57,730 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 15:10:57,732 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,732 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:57,732 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1804996133, now seen corresponding path program 1 times [2021-07-06 15:10:57,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505236188] [2021-07-06 15:10:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505236188] [2021-07-06 15:10:57,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505236188] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101373266] [2021-07-06 15:10:57,757 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,758 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 3.5) internal successors, (7), 3 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) [2021-07-06 15:10:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,790 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-07-06 15:10:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2021-07-06 15:10:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,791 INFO L225 Difference]: With dead ends: 46 [2021-07-06 15:10:57,791 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:57,791 INFO L795 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 [2021-07-06 15:10:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:57,792 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) [2021-07-06 15:10:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:57,792 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 15:10:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,792 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:57,792 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-07-06 15:10:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:57,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:57,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:57,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,801 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,801 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,801 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,801 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,801 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:57,801 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,802 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,803 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,804 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,805 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,806 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-06 15:10:57,806 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:57,806 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (4/10) [2021-07-06 15:10:57,807 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:57,807 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:57,807 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 15:10:57,808 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,809 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:57,809 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,809 INFO L82 PathProgramCache]: Analyzing trace with hash -350699952, now seen corresponding path program 1 times [2021-07-06 15:10:57,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005532009] [2021-07-06 15:10:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:10:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005532009] [2021-07-06 15:10:57,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005532009] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471483975] [2021-07-06 15:10:57,834 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,835 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-07-06 15:10:57,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,877 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2021-07-06 15:10:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 [2021-07-06 15:10:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,878 INFO L225 Difference]: With dead ends: 81 [2021-07-06 15:10:57,878 INFO L226 Difference]: Without dead ends: 16 [2021-07-06 15:10:57,880 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-07-06 15:10:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-07-06 15:10:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-07-06 15:10:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-07-06 15:10:57,883 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2021-07-06 15:10:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,884 INFO L442 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-07-06 15:10:57,884 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-07-06 15:10:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-07-06 15:10:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 15:10:57,884 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,884 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:57,884 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-06 15:10:57,885 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash -350699890, now seen corresponding path program 1 times [2021-07-06 15:10:57,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983839378] [2021-07-06 15:10:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983839378] [2021-07-06 15:10:57,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983839378] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370089155] [2021-07-06 15:10:57,919 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,920 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-07-06 15:10:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:57,929 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-07-06 15:10:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:57,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 [2021-07-06 15:10:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:57,930 INFO L225 Difference]: With dead ends: 11 [2021-07-06 15:10:57,930 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:57,930 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:57,931 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) [2021-07-06 15:10:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:57,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 15:10:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:57,931 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:57,931 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-07-06 15:10:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:57,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:57,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:57,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:57,942 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,942 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (and (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:57,942 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,943 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,943 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:57,943 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,944 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,945 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,945 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,946 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,947 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,947 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,947 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,947 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,947 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:57,948 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:57,948 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:57,948 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:57,948 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-06 15:10:57,948 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:57,950 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (5/10) [2021-07-06 15:10:57,953 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:57,954 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:57,954 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 15:10:57,959 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:57,959 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:57,962 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:57,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2013203434, now seen corresponding path program 1 times [2021-07-06 15:10:57,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:57,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621393333] [2021-07-06 15:10:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:57,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:57,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:57,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:57,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:10:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:57,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:57,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621393333] [2021-07-06 15:10:57,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621393333] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:57,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:57,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:57,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169927874] [2021-07-06 15:10:57,997 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:57,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:57,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:57,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:57,998 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 5.5) internal successors, (11), 3 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) [2021-07-06 15:10:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,032 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2021-07-06 15:10:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:58,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) Word has length 11 [2021-07-06 15:10:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,033 INFO L225 Difference]: With dead ends: 81 [2021-07-06 15:10:58,033 INFO L226 Difference]: Without dead ends: 17 [2021-07-06 15:10:58,034 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-07-06 15:10:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-07-06 15:10:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2021-07-06 15:10:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-07-06 15:10:58,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-07-06 15:10:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,035 INFO L442 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-07-06 15:10:58,036 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-07-06 15:10:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-07-06 15:10:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 15:10:58,036 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,036 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,036 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-06 15:10:58,036 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2013205356, now seen corresponding path program 1 times [2021-07-06 15:10:58,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241390563] [2021-07-06 15:10:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:58,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:58,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-06 15:10:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:58,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:58,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241390563] [2021-07-06 15:10:58,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241390563] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:58,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:58,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:58,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731999603] [2021-07-06 15:10:58,049 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:58,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:58,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:58,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,050 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-07-06 15:10:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,058 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-07-06 15:10:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) Word has length 11 [2021-07-06 15:10:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,059 INFO L225 Difference]: With dead ends: 12 [2021-07-06 15:10:58,059 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:58,059 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:58,060 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) [2021-07-06 15:10:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:58,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 15:10:58,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,060 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:58,060 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-07-06 15:10:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:58,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:58,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:58,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,066 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,066 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (and (< 0 (+ 2147483649 ULTIMATE.start_build_nondet_String_~length~0)) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,067 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,067 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,068 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,069 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,070 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,070 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-06 15:10:58,070 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:58,071 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (6/10) [2021-07-06 15:10:58,071 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:58,072 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:58,072 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:10:58,073 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,073 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,073 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2015202926, now seen corresponding path program 1 times [2021-07-06 15:10:58,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384425935] [2021-07-06 15:10:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:58,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:58,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:10:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:58,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:58,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384425935] [2021-07-06 15:10:58,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384425935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:58,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:58,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:58,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077134652] [2021-07-06 15:10:58,087 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:58,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:58,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,088 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 6.0) internal successors, (12), 3 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) [2021-07-06 15:10:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,119 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2021-07-06 15:10:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) Word has length 12 [2021-07-06 15:10:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,119 INFO L225 Difference]: With dead ends: 81 [2021-07-06 15:10:58,120 INFO L226 Difference]: Without dead ends: 18 [2021-07-06 15:10:58,120 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-07-06 15:10:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-07-06 15:10:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2021-07-06 15:10:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-07-06 15:10:58,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-07-06 15:10:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,121 INFO L442 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-07-06 15:10:58,122 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-07-06 15:10:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-07-06 15:10:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:10:58,122 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,122 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,122 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-06 15:10:58,122 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2015143344, now seen corresponding path program 1 times [2021-07-06 15:10:58,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487474527] [2021-07-06 15:10:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:58,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:58,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:58,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:58,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487474527] [2021-07-06 15:10:58,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487474527] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:58,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:58,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:58,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947812759] [2021-07-06 15:10:58,139 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:58,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:58,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:58,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,140 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-07-06 15:10:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,149 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-07-06 15:10:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:58,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) Word has length 12 [2021-07-06 15:10:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,149 INFO L225 Difference]: With dead ends: 13 [2021-07-06 15:10:58,149 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:58,150 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:58,150 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) [2021-07-06 15:10:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:58,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-07-06 15:10:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,150 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:58,151 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-07-06 15:10:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:58,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:58,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:58,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,156 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,156 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (and (< 0 (+ 2147483649 ULTIMATE.start_build_nondet_String_~length~0)) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,157 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,157 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,158 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,159 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,160 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,161 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-06 15:10:58,161 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:58,161 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (7/10) [2021-07-06 15:10:58,162 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:58,162 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:58,162 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:10:58,163 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,163 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,163 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1953218796, now seen corresponding path program 1 times [2021-07-06 15:10:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950241830] [2021-07-06 15:10:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:58,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:58,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:10:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:58,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:58,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950241830] [2021-07-06 15:10:58,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950241830] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:58,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:58,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:58,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302538956] [2021-07-06 15:10:58,178 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:58,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:58,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:58,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,179 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 6.5) internal successors, (13), 3 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) [2021-07-06 15:10:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,209 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2021-07-06 15:10:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:58,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) Word has length 13 [2021-07-06 15:10:58,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,209 INFO L225 Difference]: With dead ends: 81 [2021-07-06 15:10:58,210 INFO L226 Difference]: Without dead ends: 19 [2021-07-06 15:10:58,210 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-07-06 15:10:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2021-07-06 15:10:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2021-07-06 15:10:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-07-06 15:10:58,211 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-07-06 15:10:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,211 INFO L442 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-07-06 15:10:58,211 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-07-06 15:10:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-07-06 15:10:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:10:58,212 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,212 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,212 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-06 15:10:58,212 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1955065838, now seen corresponding path program 1 times [2021-07-06 15:10:58,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445613868] [2021-07-06 15:10:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:58,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:58,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:58,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:58,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445613868] [2021-07-06 15:10:58,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445613868] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:58,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:58,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:58,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144539273] [2021-07-06 15:10:58,226 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:58,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:58,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,227 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-07-06 15:10:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,265 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-07-06 15:10:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:58,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) Word has length 13 [2021-07-06 15:10:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,266 INFO L225 Difference]: With dead ends: 14 [2021-07-06 15:10:58,266 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:58,266 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:58,266 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) [2021-07-06 15:10:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:58,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 15:10:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,267 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:58,267 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2021-07-06 15:10:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:58,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:58,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:58,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,278 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,278 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (and (< 0 (+ 2147483649 ULTIMATE.start_build_nondet_String_~length~0)) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,278 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,279 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,280 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,281 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,282 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,282 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-06 15:10:58,283 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:58,283 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (8/10) [2021-07-06 15:10:58,284 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:58,284 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:58,284 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-07-06 15:10:58,301 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,301 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,301 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,301 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2021-07-06 15:10:58,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776883335] [2021-07-06 15:10:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:58,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:58,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:58,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:58,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:58,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:58,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776883335] [2021-07-06 15:10:58,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776883335] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:58,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:58,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 15:10:58,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993941663] [2021-07-06 15:10:58,344 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 15:10:58,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:58,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 15:10:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:10:58,345 INFO L87 Difference]: Start difference. First operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2021-07-06 15:10:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:58,359 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-07-06 15:10:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 15:10:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 17 [2021-07-06 15:10:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:58,362 INFO L225 Difference]: With dead ends: 46 [2021-07-06 15:10:58,362 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:58,363 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-06 15:10:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:58,364 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) [2021-07-06 15:10:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:58,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-07-06 15:10:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:58,364 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:58,364 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2021-07-06 15:10:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:58,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:58,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:58,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:58,376 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,376 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (and (< 0 (+ 2147483649 ULTIMATE.start_build_nondet_String_~length~0)) (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,376 INFO L758 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:58,376 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,376 INFO L762 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-07-06 15:10:58,376 INFO L762 garLoopResultBuilder]: For program point L36-2(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,377 INFO L762 garLoopResultBuilder]: For program point L33-2(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point L33-3(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point L33-5(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L758 garLoopResultBuilder]: At program point L33-7(lines 33 40) the Hoare annotation is: (and (<= ULTIMATE.start_cstrncmp_~n 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point L33-8(lines 33 40) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,378 INFO L762 garLoopResultBuilder]: For program point L30(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:58,379 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,379 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,379 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,379 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L758 garLoopResultBuilder]: At program point L47(lines 46 48) the Hoare annotation is: (and (<= ULTIMATE.start_cstrncmp_~n 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:58,380 INFO L762 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-07-06 15:10:58,381 INFO L758 garLoopResultBuilder]: At program point L43-3(lines 26 44) the Hoare annotation is: (and (<= ULTIMATE.start_cstrncmp_~n 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2021-07-06 15:10:58,381 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-06 15:10:58,381 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:58,381 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (9/10) [2021-07-06 15:10:58,382 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:58,382 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:58,382 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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) [2021-07-06 15:10:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-06 15:10:58,385 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:58,385 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:58,385 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2021-07-06 15:10:58,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:58,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723929281] [2021-07-06 15:10:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:58,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 15:10:58,411 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 15:10:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 15:10:58,430 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 15:10:58,451 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 15:10:58,453 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 15:10:58,453 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-06 15:10:58,453 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:58,453 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW was UNSAFE (10/10) [2021-07-06 15:10:58,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:10:58 BoogieIcfgContainer [2021-07-06 15:10:58,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:10:58,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:10:58,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:10:58,502 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:10:58,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:10:57" (3/4) ... [2021-07-06 15:10:58,504 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 15:10:58,540 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:10:58,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:10:58,542 INFO L168 Benchmark]: Toolchain (without parser) took 2056.77 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.2 MB in the beginning and 22.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:58,542 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory is still 26.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:10:58,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.81 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 27.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:58,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.44 ms. Allocated memory is still 54.5 MB. Free memory was 27.7 MB in the beginning and 37.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:58,543 INFO L168 Benchmark]: Boogie Preprocessor took 13.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 36.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:10:58,543 INFO L168 Benchmark]: RCFGBuilder took 306.28 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 29.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:58,543 INFO L168 Benchmark]: TraceAbstraction took 1466.16 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 24.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:58,544 INFO L168 Benchmark]: Witness Printer took 39.31 ms. Allocated memory is still 67.1 MB. Free memory was 24.3 MB in the beginning and 22.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:58,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory is still 26.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 166.81 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 27.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.44 ms. Allocated memory is still 54.5 MB. Free memory was 27.7 MB in the beginning and 37.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 36.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.28 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 29.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1466.16 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 24.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 39.31 ms. Allocated memory is still 67.1 MB. Free memory was 24.3 MB in the beginning and 22.2 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 357.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.6ms, AutomataDifference: 112.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 22.9ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 25 SDs, 0 SdLazy, 29 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.1ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 3.4ms SsaConstructionTime, 18.8ms SatisfiabilityAnalysisTime, 54.8ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 94.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 46.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 9.3ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 34 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.1ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 10.3ms SatisfiabilityAnalysisTime, 12.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 183.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.0ms, AutomataDifference: 69.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5.5ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 34 SDslu, 25 SDs, 0 SdLazy, 31 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.2ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.2ms SsaConstructionTime, 17.8ms SatisfiabilityAnalysisTime, 48.1ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 75.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 34.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.9ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 32 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.5ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 12.3ms SatisfiabilityAnalysisTime, 8.8ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 142.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 56.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 10.2ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 36 SDslu, 25 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.4ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 3.2ms SsaConstructionTime, 27.8ms SatisfiabilityAnalysisTime, 22.4ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 118.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 46.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5.4ms, InitialAbstractionConstructionTime: 4.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 35 SDslu, 25 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.0ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.7ms SsaConstructionTime, 13.0ms SatisfiabilityAnalysisTime, 24.8ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 89.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 42.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5.3ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 34 SDslu, 25 SDs, 0 SdLazy, 37 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 1.9ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 6.6ms SatisfiabilityAnalysisTime, 18.7ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 121.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 71.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 10.6ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 32 SDslu, 25 SDs, 0 SdLazy, 37 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.0ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.1ms SsaConstructionTime, 6.3ms SatisfiabilityAnalysisTime, 16.3ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 97.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 16.4ms, AutomataDifference: 18.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 10.6ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 22 SDslu, 57 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.4ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 5.0ms SatisfiabilityAnalysisTime, 33.7ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 71.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9ms SsaConstructionTime, 21.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: n <= 2147483647 && 1 <= length - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n <= 2147483647 && 1 <= length - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: n <= 2147483647 && 1 <= length - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (0 < 2147483649 + length && length <= 2147483647) && 1 <= length RESULT: Ultimate proved your program to be incorrect! [2021-07-06 15:10:58,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...