./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrspn.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/cstrspn.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 0c74f0cc26425c1a044a70e86941b5dd82b132ff ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:11:06,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:11:06,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:11:06,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:11:06,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:11:06,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:11:06,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:11:06,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:11:06,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:11:06,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:11:06,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:11:06,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:11:06,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:11:06,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:11:06,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:11:06,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:11:06,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:11:06,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:11:06,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:11:06,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:11:06,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:11:06,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:11:06,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:11:06,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:11:06,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:11:06,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:11:06,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:11:06,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:11:06,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:11:06,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:11:06,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:11:06,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:11:06,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:11:06,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:11:06,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:11:06,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:11:06,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:11:06,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:11:06,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:11:06,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:11:06,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:11:06,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:11:06,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:11:06,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:11:06,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:11:06,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:11:06,559 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:11:06,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:11:06,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:11:06,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:11:06,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:11:06,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:11:06,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:11:06,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c74f0cc26425c1a044a70e86941b5dd82b132ff [2021-07-06 15:11:06,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:11:06,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:11:06,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:11:06,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:11:06,851 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:11:06,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2021-07-06 15:11:06,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc2233c2/169a0fb004ab43ddbda192c1e142083a/FLAG3c75b83dc [2021-07-06 15:11:07,298 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:11:07,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2021-07-06 15:11:07,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc2233c2/169a0fb004ab43ddbda192c1e142083a/FLAG3c75b83dc [2021-07-06 15:11:07,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc2233c2/169a0fb004ab43ddbda192c1e142083a [2021-07-06 15:11:07,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:11:07,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:11:07,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:11:07,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:11:07,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:11:07,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cf0281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07, skipping insertion in model container [2021-07-06 15:11:07,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:11:07,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:11:07,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:11:07,469 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:11:07,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:11:07,530 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:11:07,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07 WrapperNode [2021-07-06 15:11:07,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:11:07,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:11:07,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:11:07,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:11:07,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:11:07,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:11:07,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:11:07,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:11:07,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:11:07,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:11:07,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:11:07,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:11:07,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (1/1) ... [2021-07-06 15:11:07,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:11:07,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:11:07,621 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 15:11:07,629 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 15:11:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 15:11:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 15:11:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:11:07,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:11:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 15:11:07,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:11:07,969 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-06 15:11:07,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:07 BoogieIcfgContainer [2021-07-06 15:11:07,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:11:07,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:11:07,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:11:07,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:11:07,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:11:07" (1/3) ... [2021-07-06 15:11:07,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e844f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:11:07, skipping insertion in model container [2021-07-06 15:11:07,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:07" (2/3) ... [2021-07-06 15:11:07,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e844f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:11:07, skipping insertion in model container [2021-07-06 15:11:07,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:07" (3/3) ... [2021-07-06 15:11:07,976 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrspn.c [2021-07-06 15:11:07,980 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:11:07,980 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-07-06 15:11:08,039 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:08,052 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 15:11:08,053 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:08,077 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 15:11:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:11:08,080 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,081 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:11:08,081 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,085 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-07-06 15:11:08,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757811537] [2021-07-06 15:11:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,248 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 15:11:08,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757811537] [2021-07-06 15:11:08,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757811537] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365133513] [2021-07-06 15:11:08,263 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,281 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 15:11:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,386 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-07-06 15:11:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,387 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 15:11:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,392 INFO L225 Difference]: With dead ends: 75 [2021-07-06 15:11:08,392 INFO L226 Difference]: Without dead ends: 5 [2021-07-06 15:11:08,394 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2021-07-06 15:11:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-07-06 15:11:08,410 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 15:11:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2021-07-06 15:11:08,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 4 [2021-07-06 15:11:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,412 INFO L442 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2021-07-06 15:11:08,412 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 15:11:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2021-07-06 15:11:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:11:08,413 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,413 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:11:08,414 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:11:08,414 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,417 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-07-06 15:11:08,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852128226] [2021-07-06 15:11:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,445 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 15:11:08,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852128226] [2021-07-06 15:11:08,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852128226] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195768610] [2021-07-06 15:11:08,448 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,449 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 15:11:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,451 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2021-07-06 15:11:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,451 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 15:11:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,452 INFO L225 Difference]: With dead ends: 5 [2021-07-06 15:11:08,452 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:08,453 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:08,453 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 15:11:08,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:08,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-07-06 15:11:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,454 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:08,454 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 15:11:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:08,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:08,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:08,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,472 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,473 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,473 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,473 INFO L765 garLoopResultBuilder]: At program point L31-4(lines 31 38) the Hoare annotation is: true [2021-07-06 15:11:08,474 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,474 INFO L765 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: true [2021-07-06 15:11:08,474 INFO L765 garLoopResultBuilder]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2021-07-06 15:11:08,474 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,474 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:08,474 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,474 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,475 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,475 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,475 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,479 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,479 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,480 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,480 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,480 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,480 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:08,480 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,480 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,481 INFO L765 garLoopResultBuilder]: At program point L34-5(lines 34 35) the Hoare annotation is: true [2021-07-06 15:11:08,481 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,481 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,481 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,481 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,482 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,482 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,483 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,483 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,483 INFO L765 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: true [2021-07-06 15:11:08,483 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,484 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,484 INFO L765 garLoopResultBuilder]: At program point L39(lines 26 40) the Hoare annotation is: true [2021-07-06 15:11:08,484 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 15:11:08,484 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:08,487 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/8) [2021-07-06 15:11:08,497 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:08,498 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 15:11:08,499 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:08,500 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 15:11:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 15:11:08,501 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,501 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 15:11:08,501 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2021-07-06 15:11:08,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110790929] [2021-07-06 15:11:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,524 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 15:11:08,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110790929] [2021-07-06 15:11:08,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110790929] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860055431] [2021-07-06 15:11:08,525 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,526 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 15:11:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,567 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-07-06 15:11:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,568 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 15:11:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,569 INFO L225 Difference]: With dead ends: 48 [2021-07-06 15:11:08,569 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:08,570 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 15:11:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:08,571 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 15:11:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:08,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 15:11:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,572 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:08,572 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 15:11:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:08,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:08,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:08,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,597 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,598 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,598 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,600 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 15:11:08,600 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,600 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 15:11:08,600 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 15:11:08,601 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,601 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:08,601 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,601 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,601 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,602 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,602 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,602 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,602 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,602 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,603 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,603 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,603 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:08,603 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,603 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,603 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 15:11:08,604 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,605 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:08,606 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,606 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,606 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 15:11:08,606 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-06 15:11:08,606 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:08,607 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/8) [2021-07-06 15:11:08,614 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:08,616 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 15:11:08,617 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:08,619 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 15:11:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:11:08,620 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,620 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:11:08,620 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,621 INFO L82 PathProgramCache]: Analyzing trace with hash 889509673, now seen corresponding path program 1 times [2021-07-06 15:11:08,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239867978] [2021-07-06 15:11:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,647 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 15:11:08,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239867978] [2021-07-06 15:11:08,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239867978] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122364299] [2021-07-06 15:11:08,651 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,653 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 15:11:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,708 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-07-06 15:11:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,709 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 15:11:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,710 INFO L225 Difference]: With dead ends: 75 [2021-07-06 15:11:08,710 INFO L226 Difference]: Without dead ends: 7 [2021-07-06 15:11:08,711 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-07-06 15:11:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-07-06 15:11:08,712 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 15:11:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-07-06 15:11:08,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-07-06 15:11:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,713 INFO L442 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-07-06 15:11:08,713 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 15:11:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-07-06 15:11:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:11:08,714 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,714 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:11:08,715 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-06 15:11:08,716 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,716 INFO L82 PathProgramCache]: Analyzing trace with hash 889569255, now seen corresponding path program 1 times [2021-07-06 15:11:08,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106012407] [2021-07-06 15:11:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,753 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 15:11:08,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106012407] [2021-07-06 15:11:08,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106012407] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665755454] [2021-07-06 15:11:08,754 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,756 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 15:11:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,762 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-07-06 15:11:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,763 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 15:11:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,763 INFO L225 Difference]: With dead ends: 7 [2021-07-06 15:11:08,763 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:08,763 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:08,764 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 15:11:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:08,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-06 15:11:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,764 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:08,766 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 15:11:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:08,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:08,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:08,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,774 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,774 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,774 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,774 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 15:11:08,775 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,775 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 15:11:08,775 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 15:11:08,775 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,775 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:08,775 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,775 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,775 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,776 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,777 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 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,777 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,778 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,778 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,778 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,778 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:08,778 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,778 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,778 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 15:11:08,779 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-06 15:11:08,779 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:08,779 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (3/8) [2021-07-06 15:11:08,780 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:08,780 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 15:11:08,780 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:08,781 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 15:11:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 15:11:08,781 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,781 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:08,782 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1804996133, now seen corresponding path program 1 times [2021-07-06 15:11:08,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881453553] [2021-07-06 15:11:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,805 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 15:11:08,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881453553] [2021-07-06 15:11:08,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881453553] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641912894] [2021-07-06 15:11:08,806 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,807 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 15:11:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,841 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-07-06 15:11:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,842 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 15:11:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,842 INFO L225 Difference]: With dead ends: 48 [2021-07-06 15:11:08,842 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:08,843 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:08,843 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 15:11:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:08,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 15:11:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,844 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:08,844 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 15:11:08,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:08,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:08,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:08,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,854 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,854 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,855 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,855 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 15:11:08,855 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,855 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 15:11:08,855 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 15:11:08,855 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,856 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,857 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,858 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 15:11:08,858 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,858 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,858 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,858 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,858 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,859 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,859 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,859 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,859 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:08,859 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,859 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,859 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 15:11:08,860 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-06 15:11:08,860 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:08,860 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (4/8) [2021-07-06 15:11:08,861 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:08,862 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 15:11:08,862 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:08,863 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 15:11:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 15:11:08,863 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,863 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:08,863 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,864 INFO L82 PathProgramCache]: Analyzing trace with hash -350699952, now seen corresponding path program 1 times [2021-07-06 15:11:08,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951082951] [2021-07-06 15:11:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:08,898 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 15:11:08,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951082951] [2021-07-06 15:11:08,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951082951] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156397455] [2021-07-06 15:11:08,899 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,900 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 15:11:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,932 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,933 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 15:11:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,933 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:08,933 INFO L226 Difference]: Without dead ends: 16 [2021-07-06 15:11:08,933 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-07-06 15:11:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-07-06 15:11:08,935 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 15:11:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-07-06 15:11:08,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2021-07-06 15:11:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,936 INFO L442 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-07-06 15:11:08,936 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 15:11:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-07-06 15:11:08,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 15:11:08,936 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,936 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:08,937 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-06 15:11:08,937 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash -350699890, now seen corresponding path program 1 times [2021-07-06 15:11:08,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322694840] [2021-07-06 15:11:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:08,950 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 15:11:08,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322694840] [2021-07-06 15:11:08,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322694840] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625250292] [2021-07-06 15:11:08,951 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,951 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 15:11:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:08,959 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-07-06 15:11:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:08,959 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 15:11:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:08,959 INFO L225 Difference]: With dead ends: 11 [2021-07-06 15:11:08,959 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:08,960 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:08,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:08,960 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 15:11:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:08,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 15:11:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:08,960 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:08,961 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 15:11:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:08,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:08,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:08,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:08,968 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,968 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,968 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,968 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 15:11:08,968 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:08,968 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 15:11:08,968 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 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,969 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,970 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 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:08,970 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,971 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:08,971 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:08,972 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:08,972 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 15:11:08,972 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-06 15:11:08,972 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:08,972 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (5/8) [2021-07-06 15:11:08,973 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:08,973 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 15:11:08,973 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:08,974 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 15:11:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 15:11:08,974 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:08,974 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:08,975 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2013203434, now seen corresponding path program 1 times [2021-07-06 15:11:08,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:08,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778421586] [2021-07-06 15:11:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:08,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:08,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:08,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:08,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:08,988 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 15:11:08,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:08,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778421586] [2021-07-06 15:11:08,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778421586] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:08,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:08,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:08,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139280405] [2021-07-06 15:11:08,989 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:08,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:08,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:08,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:08,990 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 15:11:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:09,022 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:09,022 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 15:11:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:09,023 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:09,023 INFO L226 Difference]: Without dead ends: 17 [2021-07-06 15:11:09,023 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-07-06 15:11:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-07-06 15:11:09,024 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 15:11:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-07-06 15:11:09,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-07-06 15:11:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:09,025 INFO L442 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-07-06 15:11:09,025 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 15:11:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-07-06 15:11:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 15:11:09,025 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:09,025 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:09,026 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-06 15:11:09,026 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2013205356, now seen corresponding path program 1 times [2021-07-06 15:11:09,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:09,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112158533] [2021-07-06 15:11:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:09,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:09,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:09,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-06 15:11:09,056 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 15:11:09,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:09,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112158533] [2021-07-06 15:11:09,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112158533] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:09,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:09,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:09,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750141534] [2021-07-06 15:11:09,057 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:09,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:09,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,058 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 15:11:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:09,067 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-07-06 15:11:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:09,067 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 15:11:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:09,068 INFO L225 Difference]: With dead ends: 12 [2021-07-06 15:11:09,068 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:09,068 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:09,069 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 15:11:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:09,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 15:11:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:09,069 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:09,069 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 15:11:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:09,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:09,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:09,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,077 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,077 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,077 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,077 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 15:11:09,077 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,078 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 15:11:09,078 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 15:11:09,078 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,078 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:09,078 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,078 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,078 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,078 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:09,079 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,080 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 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,080 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,081 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,081 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,081 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:09,081 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,081 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,081 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 15:11:09,081 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-06 15:11:09,081 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:09,082 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (6/8) [2021-07-06 15:11:09,083 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:09,083 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 15:11:09,083 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:09,084 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 15:11:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:11:09,084 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:09,084 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:09,084 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2015202926, now seen corresponding path program 1 times [2021-07-06 15:11:09,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:09,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190390664] [2021-07-06 15:11:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:09,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:09,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:09,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:09,098 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 15:11:09,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:09,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190390664] [2021-07-06 15:11:09,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190390664] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:09,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:09,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:09,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952662543] [2021-07-06 15:11:09,099 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:09,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:09,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:09,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,100 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 15:11:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:09,134 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:09,134 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 15:11:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:09,134 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:09,135 INFO L226 Difference]: Without dead ends: 18 [2021-07-06 15:11:09,135 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-07-06 15:11:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-07-06 15:11:09,136 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 15:11:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-07-06 15:11:09,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-07-06 15:11:09,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:09,137 INFO L442 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-07-06 15:11:09,137 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 15:11:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-07-06 15:11:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:11:09,137 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:09,137 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:09,137 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-06 15:11:09,138 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:09,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2015143344, now seen corresponding path program 1 times [2021-07-06 15:11:09,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:09,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881973768] [2021-07-06 15:11:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:09,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:09,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:09,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:09,165 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 15:11:09,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:09,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881973768] [2021-07-06 15:11:09,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881973768] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:09,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:09,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:09,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395993291] [2021-07-06 15:11:09,166 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:09,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:09,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,167 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 15:11:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:09,175 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-07-06 15:11:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:09,176 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 15:11:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:09,176 INFO L225 Difference]: With dead ends: 13 [2021-07-06 15:11:09,176 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:09,176 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:09,177 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 15:11:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:09,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-07-06 15:11:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:09,193 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:09,193 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 15:11:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:09,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:09,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:09,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,200 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,200 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,200 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,201 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 15:11:09,201 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,201 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 15:11:09,201 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 15:11:09,201 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,201 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:09,201 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,201 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,202 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,203 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 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,203 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,204 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,204 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,204 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:09,204 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,204 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,204 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 15:11:09,204 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-06 15:11:09,204 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:09,205 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (7/8) [2021-07-06 15:11:09,205 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:09,206 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 15:11:09,206 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:09,206 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 15:11:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:11:09,207 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:09,207 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:09,207 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1953218796, now seen corresponding path program 1 times [2021-07-06 15:11:09,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:09,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214983769] [2021-07-06 15:11:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:09,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:09,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:09,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:09,219 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 15:11:09,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:09,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214983769] [2021-07-06 15:11:09,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214983769] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:09,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:09,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:09,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996666997] [2021-07-06 15:11:09,220 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:09,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:09,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:09,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,221 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 15:11:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:09,251 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-07-06 15:11:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:09,251 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 15:11:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:09,252 INFO L225 Difference]: With dead ends: 79 [2021-07-06 15:11:09,252 INFO L226 Difference]: Without dead ends: 19 [2021-07-06 15:11:09,252 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-07-06 15:11:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2021-07-06 15:11:09,253 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 15:11:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-07-06 15:11:09,253 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-07-06 15:11:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:09,254 INFO L442 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-07-06 15:11:09,254 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 15:11:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-07-06 15:11:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 15:11:09,254 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:09,254 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:09,255 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-06 15:11:09,255 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1955065838, now seen corresponding path program 1 times [2021-07-06 15:11:09,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:09,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426654715] [2021-07-06 15:11:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:09,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:09,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:09,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:09,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:09,271 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 15:11:09,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:09,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426654715] [2021-07-06 15:11:09,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426654715] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:09,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:09,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:11:09,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44264212] [2021-07-06 15:11:09,272 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:11:09,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:09,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:11:09,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,273 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 15:11:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:09,282 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-07-06 15:11:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:11:09,282 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 15:11:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:09,282 INFO L225 Difference]: With dead ends: 14 [2021-07-06 15:11:09,282 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:09,283 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:11:09,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:09,283 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 15:11:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:09,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 15:11:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:09,283 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:09,284 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 15:11:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:09,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:09,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:09,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:09,290 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,290 INFO L762 garLoopResultBuilder]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,290 INFO L762 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,290 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 15:11:09,291 INFO L762 garLoopResultBuilder]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2021-07-06 15:11:09,291 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 15:11:09,291 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 15:11:09,291 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,291 INFO L762 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-07-06 15:11:09,291 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,291 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,291 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-07-06 15:11:09,292 INFO L762 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-07-06 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,293 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 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2021-07-06 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point L18-2(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,293 INFO L762 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,294 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,294 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,294 INFO L762 garLoopResultBuilder]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,294 INFO L758 garLoopResultBuilder]: At program point L43(lines 42 44) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:11:09,294 INFO L762 garLoopResultBuilder]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:11:09,294 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:11:09,294 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 15:11:09,295 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-06 15:11:09,295 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:09,295 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (8/8) [2021-07-06 15:11:09,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:11:09 BoogieIcfgContainer [2021-07-06 15:11:09,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:11:09,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:11:09,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:11:09,307 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:11:09,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:07" (3/4) ... [2021-07-06 15:11:09,309 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 15:11:09,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-07-06 15:11:09,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-07-06 15:11:09,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 15:11:09,335 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:11:09,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:11:09,336 INFO L168 Benchmark]: Toolchain (without parser) took 2017.04 ms. Allocated memory was 56.6 MB in the beginning and 94.4 MB in the end (delta: 37.7 MB). Free memory was 35.3 MB in the beginning and 64.8 MB in the end (delta: -29.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,336 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 56.6 MB. Free memory is still 37.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:11:09,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.08 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 40.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.04 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 38.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,337 INFO L168 Benchmark]: Boogie Preprocessor took 26.69 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 37.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,337 INFO L168 Benchmark]: RCFGBuilder took 381.35 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 37.1 MB in the beginning and 55.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,337 INFO L168 Benchmark]: TraceAbstraction took 1334.44 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 67.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,337 INFO L168 Benchmark]: Witness Printer took 28.88 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 64.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:09,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 56.6 MB. Free memory is still 37.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 210.08 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 40.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.04 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 38.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.69 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 37.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 381.35 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 37.1 MB in the beginning and 55.4 MB in the end (delta: -18.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1334.44 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 67.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 28.88 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 64.8 MB in the end (delta: 3.0 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: 454.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 21.7ms, AutomataDifference: 134.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 14.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 29 SDslu, 19 SDs, 0 SdLazy, 29 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms 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: 10.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.3ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 4.9ms SsaConstructionTime, 33.4ms SatisfiabilityAnalysisTime, 47.8ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 35 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 109.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.5ms, AutomataDifference: 44.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 24.7ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 28 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms 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: 1.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 14.7ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 3.1ms SatisfiabilityAnalysisTime, 13.4ms 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: 164.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.9ms, AutomataDifference: 67.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.9ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 28 SDslu, 19 SDs, 0 SdLazy, 31 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.0ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.5ms SsaConstructionTime, 17.0ms SatisfiabilityAnalysisTime, 36.7ms 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: 80.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 36.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 9.8ms, InitialAbstractionConstructionTime: 0.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 26 SDslu, 1 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms 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, 3.0ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 8.7ms SatisfiabilityAnalysisTime, 12.2ms 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: 110.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 43.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.6ms, InitialAbstractionConstructionTime: 0.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 19 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms 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: 2.4ms 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, 3.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.6ms SsaConstructionTime, 12.6ms SatisfiabilityAnalysisTime, 28.3ms 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: 108.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.0ms, AutomataDifference: 44.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 29 SDslu, 19 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms 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: 2.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 10 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.6ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.3ms SsaConstructionTime, 5.9ms SatisfiabilityAnalysisTime, 32.7ms 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: 122.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.0ms, AutomataDifference: 45.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.9ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 35 SDtfs, 28 SDslu, 19 SDs, 0 SdLazy, 37 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=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: 17.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.6ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.3ms SsaConstructionTime, 20.3ms SatisfiabilityAnalysisTime, 15.8ms 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: 89.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.0ms, AutomataDifference: 42.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.1ms, InitialAbstractionConstructionTime: 0.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 26 SDslu, 19 SDs, 0 SdLazy, 37 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 2.2ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 5.0ms SatisfiabilityAnalysisTime, 18.8ms 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: 42]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 31]: 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 15:11:09,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...