./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrpbrk.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/cstrpbrk.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 eec7850a55859668859d25c9503478e74955da1a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:11:01,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:11:01,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:11:01,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:11:01,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:11:01,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:11:01,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:11:01,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:11:01,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:11:01,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:11:01,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:11:01,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:11:01,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:11:01,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:11:01,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:11:01,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:11:01,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:11:01,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:11:01,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:11:01,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:11:01,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:11:01,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:11:01,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:11:01,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:11:01,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:11:01,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:11:01,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:11:01,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:11:01,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:11:01,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:11:01,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:11:01,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:11:01,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:11:01,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:11:01,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:11:01,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:11:01,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:11:01,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:11:01,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:11:01,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:11:01,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:11:01,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:11:01,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:11:01,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:11:01,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:11:01,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:11:01,631 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:11:01,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:11:01,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:11:01,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:11:01,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:11:01,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:11:01,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:11:01,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:11:01,633 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:11:01,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:11:01,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:11:01,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:11:01,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:11:01,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:11:01,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:11:01,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:11:01,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:11:01,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:11:01,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:11:01,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:11:01,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:11:01,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:11:01,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:11:01,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eec7850a55859668859d25c9503478e74955da1a [2021-07-06 15:11:01,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:11:01,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:11:01,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:11:01,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:11:01,984 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:11:01,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrpbrk.c [2021-07-06 15:11:02,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc44e0c0/febc3e57e12649939c079d3881fb26c3/FLAG3a3da26ba [2021-07-06 15:11:02,410 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:11:02,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrpbrk.c [2021-07-06 15:11:02,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc44e0c0/febc3e57e12649939c079d3881fb26c3/FLAG3a3da26ba [2021-07-06 15:11:02,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc44e0c0/febc3e57e12649939c079d3881fb26c3 [2021-07-06 15:11:02,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:11:02,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:11:02,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:11:02,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:11:02,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:11:02,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6656738f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02, skipping insertion in model container [2021-07-06 15:11:02,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:11:02,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:11:02,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:11:02,602 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:11:02,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:11:02,648 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:11:02,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02 WrapperNode [2021-07-06 15:11:02,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:11:02,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:11:02,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:11:02,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:11:02,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:11:02,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:11:02,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:11:02,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:11:02,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:11:02,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:11:02,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:11:02,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:11:02,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (1/1) ... [2021-07-06 15:11:02,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:11:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:11:02,746 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 15:11:02,768 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 15:11:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 15:11:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 15:11:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:11:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:11:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 15:11:03,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:11:03,058 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-06 15:11:03,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:03 BoogieIcfgContainer [2021-07-06 15:11:03,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:11:03,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:11:03,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:11:03,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:11:03,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:11:02" (1/3) ... [2021-07-06 15:11:03,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a9f221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:11:03, skipping insertion in model container [2021-07-06 15:11:03,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:02" (2/3) ... [2021-07-06 15:11:03,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a9f221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:11:03, skipping insertion in model container [2021-07-06 15:11:03,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:03" (3/3) ... [2021-07-06 15:11:03,078 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrpbrk.c [2021-07-06 15:11:03,082 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:11:03,082 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-07-06 15:11:03,107 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,111 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 15:11:03,112 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:11:03,123 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,123 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:11:03,123 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-07-06 15:11:03,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718412187] [2021-07-06 15:11:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,212 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 15:11:03,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718412187] [2021-07-06 15:11:03,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718412187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156893302] [2021-07-06 15:11:03,217 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,226 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,287 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-07-06 15:11:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,289 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 15:11:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,293 INFO L225 Difference]: With dead ends: 75 [2021-07-06 15:11:03,293 INFO L226 Difference]: Without dead ends: 5 [2021-07-06 15:11:03,295 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2021-07-06 15:11:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-07-06 15:11:03,310 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 15:11:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2021-07-06 15:11:03,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 4 [2021-07-06 15:11:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,312 INFO L442 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2021-07-06 15:11:03,312 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 15:11:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2021-07-06 15:11:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:11:03,312 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,312 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:11:03,313 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:11:03,313 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,314 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-07-06 15:11:03,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739185295] [2021-07-06 15:11:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,329 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 15:11:03,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739185295] [2021-07-06 15:11:03,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739185295] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993863491] [2021-07-06 15:11:03,331 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,332 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 15:11:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,333 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2021-07-06 15:11:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,334 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 15:11:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,334 INFO L225 Difference]: With dead ends: 5 [2021-07-06 15:11:03,334 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,335 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,335 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 15:11:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-07-06 15:11:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,336 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,336 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 15:11:03,336 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,351 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,351 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,352 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,352 INFO L765 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: true [2021-07-06 15:11:03,352 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,352 INFO L765 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: true [2021-07-06 15:11:03,352 INFO L765 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2021-07-06 15:11:03,352 INFO L765 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: true [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,353 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,354 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,355 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,355 INFO L765 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: true [2021-07-06 15:11:03,355 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,355 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,355 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,355 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,355 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,356 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,356 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,356 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,356 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,356 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,356 INFO L765 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: true [2021-07-06 15:11:03,356 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 15:11:03,357 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,359 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/8) [2021-07-06 15:11:03,361 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,361 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 15:11:03,361 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 15:11:03,363 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,363 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 15:11:03,363 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2021-07-06 15:11:03,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76417785] [2021-07-06 15:11:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,376 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 15:11:03,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76417785] [2021-07-06 15:11:03,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76417785] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303484152] [2021-07-06 15:11:03,379 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,380 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,407 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-07-06 15:11:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,407 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 15:11:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,407 INFO L225 Difference]: With dead ends: 48 [2021-07-06 15:11:03,408 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,408 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,409 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 15:11:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 15:11:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,409 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,409 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 15:11:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,421 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,421 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,422 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,422 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,422 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,422 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 15:11:03,422 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 15:11:03,422 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,422 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,423 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,424 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,425 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,426 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,426 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,426 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,426 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,426 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-06 15:11:03,426 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,427 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/8) [2021-07-06 15:11:03,428 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,429 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 15:11:03,429 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:11:03,430 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,431 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,431 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,431 INFO L82 PathProgramCache]: Analyzing trace with hash 889509673, now seen corresponding path program 1 times [2021-07-06 15:11:03,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447583099] [2021-07-06 15:11:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,447 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 15:11:03,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447583099] [2021-07-06 15:11:03,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447583099] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478568267] [2021-07-06 15:11:03,448 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,449 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,490 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-07-06 15:11:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,491 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 15:11:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,491 INFO L225 Difference]: With dead ends: 75 [2021-07-06 15:11:03,491 INFO L226 Difference]: Without dead ends: 7 [2021-07-06 15:11:03,492 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-07-06 15:11:03,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-07-06 15:11:03,493 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 15:11:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-07-06 15:11:03,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-07-06 15:11:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,493 INFO L442 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-07-06 15:11:03,493 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 15:11:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-07-06 15:11:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:11:03,494 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,494 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,494 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-06 15:11:03,494 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash 889569255, now seen corresponding path program 1 times [2021-07-06 15:11:03,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813625209] [2021-07-06 15:11:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,509 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 15:11:03,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813625209] [2021-07-06 15:11:03,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813625209] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622195035] [2021-07-06 15:11:03,510 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,511 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 15:11:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,531 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-07-06 15:11:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,532 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 15:11:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,532 INFO L225 Difference]: With dead ends: 7 [2021-07-06 15:11:03,532 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,533 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,533 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 15:11:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-06 15:11:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,534 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,534 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 15:11:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,541 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,541 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,542 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,542 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,542 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,542 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 15:11:03,542 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 15:11:03,542 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,543 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,544 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,545 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,546 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,546 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,546 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,546 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-06 15:11:03,546 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,546 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (3/8) [2021-07-06 15:11:03,548 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,548 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 15:11:03,548 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 15:11:03,550 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,550 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,550 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1804996133, now seen corresponding path program 1 times [2021-07-06 15:11:03,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286613480] [2021-07-06 15:11:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,566 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 15:11:03,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286613480] [2021-07-06 15:11:03,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286613480] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094132920] [2021-07-06 15:11:03,567 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,568 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,589 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-07-06 15:11:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,590 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 15:11:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,590 INFO L225 Difference]: With dead ends: 48 [2021-07-06 15:11:03,590 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,591 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,591 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 15:11:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 15:11:03,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,592 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,592 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 15:11:03,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,603 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,603 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,603 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,603 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,603 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,604 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 15:11:03,604 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 15:11:03,604 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,604 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,604 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,604 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,604 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,605 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,606 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,607 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,607 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-06 15:11:03,608 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,608 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (4/8) [2021-07-06 15:11:03,609 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,609 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 15:11:03,609 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 15:11:03,611 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,612 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,612 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,612 INFO L82 PathProgramCache]: Analyzing trace with hash -350699952, now seen corresponding path program 1 times [2021-07-06 15:11:03,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495844710] [2021-07-06 15:11:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:03,630 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 15:11:03,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495844710] [2021-07-06 15:11:03,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495844710] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272832448] [2021-07-06 15:11:03,631 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,632 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,672 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,672 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 15:11:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,673 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:03,673 INFO L226 Difference]: Without dead ends: 16 [2021-07-06 15:11:03,673 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-07-06 15:11:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-07-06 15:11:03,675 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 15:11:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-07-06 15:11:03,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2021-07-06 15:11:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,676 INFO L442 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-07-06 15:11:03,676 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 15:11:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-07-06 15:11:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 15:11:03,676 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,676 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,676 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-06 15:11:03,676 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,677 INFO L82 PathProgramCache]: Analyzing trace with hash -350699890, now seen corresponding path program 1 times [2021-07-06 15:11:03,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632517840] [2021-07-06 15:11:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,693 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 15:11:03,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632517840] [2021-07-06 15:11:03,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632517840] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670094426] [2021-07-06 15:11:03,694 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,694 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 15:11:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,703 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-07-06 15:11:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,703 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 15:11:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,703 INFO L225 Difference]: With dead ends: 11 [2021-07-06 15:11:03,704 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,704 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,704 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 15:11:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 15:11:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,705 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,705 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 15:11:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,713 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,713 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,713 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,713 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,713 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 15:11:03,713 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 15:11:03,714 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,715 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,716 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,717 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,717 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,717 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-06 15:11:03,717 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,717 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (5/8) [2021-07-06 15:11:03,718 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,721 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 15:11:03,721 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 15:11:03,722 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,722 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,722 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2013203434, now seen corresponding path program 1 times [2021-07-06 15:11:03,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151471195] [2021-07-06 15:11:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:03,738 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 15:11:03,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151471195] [2021-07-06 15:11:03,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151471195] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618483782] [2021-07-06 15:11:03,739 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,740 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,778 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,778 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 15:11:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,778 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:03,779 INFO L226 Difference]: Without dead ends: 17 [2021-07-06 15:11:03,779 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-07-06 15:11:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-07-06 15:11:03,780 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 15:11:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-07-06 15:11:03,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-07-06 15:11:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,781 INFO L442 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-07-06 15:11:03,781 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 15:11:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-07-06 15:11:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 15:11:03,781 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,781 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,782 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-06 15:11:03,782 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2013205356, now seen corresponding path program 1 times [2021-07-06 15:11:03,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69988026] [2021-07-06 15:11:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-06 15:11:03,796 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 15:11:03,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69988026] [2021-07-06 15:11:03,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69988026] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984244904] [2021-07-06 15:11:03,797 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,798 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 15:11:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,807 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-07-06 15:11:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,807 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 15:11:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,808 INFO L225 Difference]: With dead ends: 12 [2021-07-06 15:11:03,808 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,808 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,808 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 15:11:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 15:11:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,809 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,809 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 15:11:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,809 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,816 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,817 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,817 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,817 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,817 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,817 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 15:11:03,817 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 15:11:03,817 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,817 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,817 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,818 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,819 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,820 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,820 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,820 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,820 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,820 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,820 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,820 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-06 15:11:03,820 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,821 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (6/8) [2021-07-06 15:11:03,822 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,822 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 15:11:03,822 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:11:03,823 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,823 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,823 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2015202926, now seen corresponding path program 1 times [2021-07-06 15:11:03,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748534125] [2021-07-06 15:11:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:03,840 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 15:11:03,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748534125] [2021-07-06 15:11:03,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748534125] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715445899] [2021-07-06 15:11:03,841 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,841 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,876 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,877 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 15:11:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,877 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:03,877 INFO L226 Difference]: Without dead ends: 18 [2021-07-06 15:11:03,878 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 15:11:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-07-06 15:11:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-07-06 15:11:03,879 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 15:11:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-07-06 15:11:03,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-07-06 15:11:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,879 INFO L442 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-07-06 15:11:03,880 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 15:11:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-07-06 15:11:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:11:03,880 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,880 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,880 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-06 15:11:03,880 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2015143344, now seen corresponding path program 1 times [2021-07-06 15:11:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879642666] [2021-07-06 15:11:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,897 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 15:11:03,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879642666] [2021-07-06 15:11:03,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879642666] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874813590] [2021-07-06 15:11:03,898 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,899 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 15:11:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,909 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-07-06 15:11:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,910 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 15:11:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,910 INFO L225 Difference]: With dead ends: 13 [2021-07-06 15:11:03,910 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:03,910 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:03,910 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 15:11:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:03,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-07-06 15:11:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,911 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:03,911 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 15:11:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:03,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:03,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:03,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:03,919 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,919 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,919 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,919 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,919 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:03,919 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 15:11:03,919 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 15:11:03,919 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:03,920 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,921 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:03,922 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:03,922 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-06 15:11:03,922 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:03,923 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (7/8) [2021-07-06 15:11:03,924 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:03,924 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 15:11:03,924 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:11:03,925 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,925 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,925 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1953218796, now seen corresponding path program 1 times [2021-07-06 15:11:03,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150208621] [2021-07-06 15:11:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:03,940 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 15:11:03,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150208621] [2021-07-06 15:11:03,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150208621] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846733102] [2021-07-06 15:11:03,941 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,942 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 34 states have internal predecessors, (42), 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 15:11:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:03,975 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:03,975 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 15:11:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:03,976 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:03,976 INFO L226 Difference]: Without dead ends: 19 [2021-07-06 15:11:03,976 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 15:11:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-07-06 15:11:03,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2021-07-06 15:11:03,977 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 15:11:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-07-06 15:11:03,978 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-07-06 15:11:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:03,978 INFO L442 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-07-06 15:11:03,978 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 15:11:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-07-06 15:11:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:11:03,978 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:03,979 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:03,979 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-06 15:11:03,979 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:03,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1955065838, now seen corresponding path program 1 times [2021-07-06 15:11:03,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:03,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620506165] [2021-07-06 15:11:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:03,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:03,992 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 15:11:03,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:03,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620506165] [2021-07-06 15:11:03,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620506165] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:03,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:03,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:03,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524465476] [2021-07-06 15:11:03,993 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:03,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:03,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:03,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:03,994 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 15:11:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:04,004 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-07-06 15:11:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:04,004 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 15:11:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:04,005 INFO L225 Difference]: With dead ends: 14 [2021-07-06 15:11:04,005 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:04,005 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 15:11:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:04,005 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 15:11:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:04,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 15:11:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:04,006 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:04,006 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 15:11:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:04,006 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:04,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:04,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:04,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:04,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:04,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:04,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:04,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:04,016 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,016 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:04,016 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:04,016 INFO L758 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:04,016 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:04,016 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 15:11:04,016 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 15:11:04,016 INFO L758 garLoopResultBuilder]: At program point L44(lines 42 45) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:04,017 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L758 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,018 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:04,019 INFO L758 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:04,019 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-06 15:11:04,020 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:04,020 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (8/8) [2021-07-06 15:11:04,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:11:04 BoogieIcfgContainer [2021-07-06 15:11:04,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:11:04,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:11:04,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:11:04,030 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:11:04,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:03" (3/4) ... [2021-07-06 15:11:04,032 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 15:11:04,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-07-06 15:11:04,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-06 15:11:04,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 15:11:04,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:11:04,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:11:04,059 INFO L168 Benchmark]: Toolchain (without parser) took 1627.83 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.4 MB in the beginning and 41.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:04,059 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory is still 26.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:11:04,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.36 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 27.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:04,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.10 ms. Allocated memory is still 54.5 MB. Free memory was 27.9 MB in the beginning and 37.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:04,060 INFO L168 Benchmark]: Boogie Preprocessor took 30.35 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:11:04,060 INFO L168 Benchmark]: RCFGBuilder took 347.73 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 31.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:04,061 INFO L168 Benchmark]: TraceAbstraction took 955.23 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 45.0 MB in the end (delta: -14.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:11:04,061 INFO L168 Benchmark]: Witness Printer took 28.64 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 41.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:04,062 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 26.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 215.36 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 27.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.10 ms. Allocated memory is still 54.5 MB. Free memory was 27.9 MB in the beginning and 37.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.35 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 347.73 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 31.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 955.23 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 45.0 MB in the end (delta: -14.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 28.64 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 41.8 MB in the end (delta: 3.2 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 - 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 - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 252.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.1ms, AutomataDifference: 81.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 12.5ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 29 SDslu, 19 SDs, 0 SdLazy, 29 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 8.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.2ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 3.2ms SsaConstructionTime, 14.4ms SatisfiabilityAnalysisTime, 36.1ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 65.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 28.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 11.3ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 28 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.6ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 2.4ms SatisfiabilityAnalysisTime, 7.6ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 118.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 65.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.1ms, InitialAbstractionConstructionTime: 0.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 28 SDslu, 19 SDs, 0 SdLazy, 31 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.8ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.3ms SsaConstructionTime, 6.9ms SatisfiabilityAnalysisTime, 18.5ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 60.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 23.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 10.5ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 26 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.2ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 3.9ms SatisfiabilityAnalysisTime, 9.4ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 108.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.0ms, AutomataDifference: 52.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.4ms, InitialAbstractionConstructionTime: 1.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 19 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 2.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.7ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.6ms SsaConstructionTime, 9.7ms SatisfiabilityAnalysisTime, 18.5ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 102.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.0ms, AutomataDifference: 50.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.1ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 29 SDslu, 19 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 1.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 10 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.5ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.4ms SsaConstructionTime, 7.5ms SatisfiabilityAnalysisTime, 17.4ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 101.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 48.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.2ms, InitialAbstractionConstructionTime: 0.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 28 SDslu, 19 SDs, 0 SdLazy, 37 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.5ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.3ms SsaConstructionTime, 7.8ms SatisfiabilityAnalysisTime, 20.5ms 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, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 96.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 3.4ms, AutomataDifference: 46.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.8ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 26 SDslu, 19 SDs, 0 SdLazy, 37 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.3ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.2ms SsaConstructionTime, 6.6ms SatisfiabilityAnalysisTime, 16.7ms 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (0 < 2147483649 + length && length <= 2147483647) && 1 <= length RESULT: Ultimate proved your program to be correct! [2021-07-06 15:11:04,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...