./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/joey.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/joey.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 6360f720317c1229a4bb277806239106bfb4e5c0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:11:21,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:11:21,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:11:21,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:11:21,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:11:21,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:11:21,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:11:21,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:11:21,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:11:21,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:11:21,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:11:21,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:11:21,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:11:21,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:11:21,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:11:21,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:11:21,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:11:21,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:11:21,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:11:21,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:11:21,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:11:21,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:11:21,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:11:21,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:11:21,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:11:21,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:11:21,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:11:21,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:11:21,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:11:21,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:11:21,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:11:21,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:11:21,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:11:21,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:11:21,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:11:21,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:11:21,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:11:21,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:11:21,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:11:21,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:11:21,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:11:21,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:11:21,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:11:21,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:11:21,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:11:21,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:11:21,469 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:11:21,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:11:21,470 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:11:21,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:11:21,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:11:21,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:11:21,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:11:21,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:11:21,471 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:11:21,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:11:21,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:11:21,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:11:21,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:11:21,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:11:21,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:11:21,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:11:21,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:11:21,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:11:21,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:11:21,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:11:21,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:11:21,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:11:21,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:11:21,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6360f720317c1229a4bb277806239106bfb4e5c0 [2021-07-06 15:11:21,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:11:21,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:11:21,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:11:21,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:11:21,738 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:11:21,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/joey.c [2021-07-06 15:11:21,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f075f609/e5280cd2d7d34b92b4cf2e0581a84e52/FLAG87f4cf8dc [2021-07-06 15:11:22,112 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:11:22,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/joey.c [2021-07-06 15:11:22,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f075f609/e5280cd2d7d34b92b4cf2e0581a84e52/FLAG87f4cf8dc [2021-07-06 15:11:22,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f075f609/e5280cd2d7d34b92b4cf2e0581a84e52 [2021-07-06 15:11:22,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:11:22,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:11:22,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:11:22,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:11:22,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:11:22,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1727d532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22, skipping insertion in model container [2021-07-06 15:11:22,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:11:22,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:11:22,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:11:22,259 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:11:22,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:11:22,288 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:11:22,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22 WrapperNode [2021-07-06 15:11:22,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:11:22,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:11:22,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:11:22,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:11:22,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:11:22,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:11:22,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:11:22,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:11:22,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:11:22,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:11:22,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:11:22,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:11:22,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (1/1) ... [2021-07-06 15:11:22,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:11:22,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:11:22,394 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 15:11:22,476 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 15:11:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-07-06 15:11:22,499 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-07-06 15:11:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:11:22,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:11:22,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:11:22,712 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-06 15:11:22,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:22 BoogieIcfgContainer [2021-07-06 15:11:22,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:11:22,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:11:22,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:11:22,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:11:22,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:11:22" (1/3) ... [2021-07-06 15:11:22,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d45ff3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:11:22, skipping insertion in model container [2021-07-06 15:11:22,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:11:22" (2/3) ... [2021-07-06 15:11:22,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d45ff3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:11:22, skipping insertion in model container [2021-07-06 15:11:22,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:22" (3/3) ... [2021-07-06 15:11:22,719 INFO L111 eAbstractionObserver]: Analyzing ICFG joey.c [2021-07-06 15:11:22,723 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:11:22,724 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-07-06 15:11:22,793 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:22,797 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 15:11:22,798 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 15:11:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:11:22,826 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:22,826 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:11:22,827 INFO L374 AbstractCegarLoop]: === Iteration 1 === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:22,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2021-07-06 15:11:22,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:22,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247944025] [2021-07-06 15:11:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:22,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:23,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:11:23,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 15:11:23,121 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 15:11:23,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:23,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247944025] [2021-07-06 15:11:23,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247944025] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:23,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:23,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 15:11:23,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587182621] [2021-07-06 15:11:23,129 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 15:11:23,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:23,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 15:11:23,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-06 15:11:23,141 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:11:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:23,338 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2021-07-06 15:11:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 15:11:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-06 15:11:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:23,357 INFO L225 Difference]: With dead ends: 66 [2021-07-06 15:11:23,357 INFO L226 Difference]: Without dead ends: 37 [2021-07-06 15:11:23,359 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-07-06 15:11:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-07-06 15:11:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-07-06 15:11:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 28 states have internal predecessors, (30), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 15:11:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-07-06 15:11:23,413 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 6 [2021-07-06 15:11:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:23,414 INFO L442 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-07-06 15:11:23,414 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:11:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-07-06 15:11:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 15:11:23,415 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:23,415 INFO L525 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:23,415 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:11:23,415 INFO L374 AbstractCegarLoop]: === Iteration 2 === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:23,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2024032593, now seen corresponding path program 1 times [2021-07-06 15:11:23,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:23,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128359614] [2021-07-06 15:11:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:23,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:23,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:23,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:11:23,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-06 15:11:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:11:23,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:23,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128359614] [2021-07-06 15:11:23,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128359614] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:23,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:23,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-06 15:11:23,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000371750] [2021-07-06 15:11:23,531 INFO L425 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-06 15:11:23,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-06 15:11:23,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-06 15:11:23,544 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:11:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:23,821 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-07-06 15:11:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-06 15:11:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-07-06 15:11:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:23,825 INFO L225 Difference]: With dead ends: 61 [2021-07-06 15:11:23,825 INFO L226 Difference]: Without dead ends: 60 [2021-07-06 15:11:23,827 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 177.5ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-07-06 15:11:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-07-06 15:11:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-07-06 15:11:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.146341463414634) internal successors, (47), 43 states have internal predecessors, (47), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-07-06 15:11:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2021-07-06 15:11:23,853 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 12 [2021-07-06 15:11:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:23,854 INFO L442 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2021-07-06 15:11:23,855 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:11:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2021-07-06 15:11:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-06 15:11:23,857 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:23,857 INFO L525 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:23,857 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 15:11:23,857 INFO L374 AbstractCegarLoop]: === Iteration 3 === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:23,859 INFO L82 PathProgramCache]: Analyzing trace with hash -707450766, now seen corresponding path program 1 times [2021-07-06 15:11:23,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:23,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116976781] [2021-07-06 15:11:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:23,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:23,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:23,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-07-06 15:11:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:23,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:23,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-06 15:11:23,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:23,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116976781] [2021-07-06 15:11:23,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116976781] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:23,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:23,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 15:11:23,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572689212] [2021-07-06 15:11:23,928 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 15:11:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:23,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 15:11:23,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 15:11:23,929 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:11:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:24,009 INFO L93 Difference]: Finished difference Result 105 states and 140 transitions. [2021-07-06 15:11:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 15:11:24,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-07-06 15:11:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:24,010 INFO L225 Difference]: With dead ends: 105 [2021-07-06 15:11:24,010 INFO L226 Difference]: Without dead ends: 62 [2021-07-06 15:11:24,011 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-06 15:11:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-07-06 15:11:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-07-06 15:11:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-07-06 15:11:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-07-06 15:11:24,032 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 20 [2021-07-06 15:11:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:24,032 INFO L442 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-07-06 15:11:24,032 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 15:11:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-07-06 15:11:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-06 15:11:24,033 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:24,033 INFO L525 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:24,034 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-06 15:11:24,034 INFO L374 AbstractCegarLoop]: === Iteration 4 === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1824861048, now seen corresponding path program 1 times [2021-07-06 15:11:24,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:24,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131072720] [2021-07-06 15:11:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:24,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:24,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:24,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-06 15:11:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:24,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 15:11:24,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 15:11:24,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-07-06 15:11:24,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-07-06 15:11:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:24,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-06 15:11:24,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:24,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131072720] [2021-07-06 15:11:24,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131072720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:24,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:24,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-06 15:11:24,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832302629] [2021-07-06 15:11:24,165 INFO L425 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-06 15:11:24,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-06 15:11:24,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-07-06 15:11:24,166 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 15:11:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:24,222 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2021-07-06 15:11:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 15:11:24,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-07-06 15:11:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:24,223 INFO L225 Difference]: With dead ends: 67 [2021-07-06 15:11:24,223 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:24,224 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-07-06 15:11:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:24,225 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 15:11:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:24,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-07-06 15:11:24,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:24,225 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:24,226 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 15:11:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:24,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:24,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:24,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,313 INFO L762 garLoopResultBuilder]: For program point recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,313 INFO L762 garLoopResultBuilder]: For program point recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,313 INFO L762 garLoopResultBuilder]: For program point recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,314 INFO L762 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,314 INFO L762 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,314 INFO L762 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,314 INFO L758 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (or (not (<= |rec_#in~x| 2147483647)) (and (<= rec_~x 2147483647) (<= 1 rec_~x) (<= 2 |rec_#t~pre1|) (<= |rec_#t~pre1| 2147483647))) [2021-07-06 15:11:24,314 INFO L762 garLoopResultBuilder]: For program point recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,314 INFO L762 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,314 INFO L762 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,315 INFO L758 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (or (and (= rec_~x |rec_#in~x|) (<= 1 rec_~x) (<= rec_~x (* 2 (div rec_~x 2)))) (not (<= |rec_#in~x| 2147483647))) [2021-07-06 15:11:24,315 INFO L762 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,315 INFO L762 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,315 INFO L762 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,315 INFO L758 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (not (<= |rec_#in~x| 2147483647)) [2021-07-06 15:11:24,315 INFO L762 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,315 INFO L762 garLoopResultBuilder]: For program point recEXIT(lines 9 17) no Hoare annotation was computed. [2021-07-06 15:11:24,315 INFO L762 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,316 INFO L762 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,316 INFO L765 garLoopResultBuilder]: At program point recENTRY(lines 9 17) the Hoare annotation is: true [2021-07-06 15:11:24,316 INFO L762 garLoopResultBuilder]: For program point recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,316 INFO L762 garLoopResultBuilder]: For program point recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,316 INFO L762 garLoopResultBuilder]: For program point recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,316 INFO L762 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L762 garLoopResultBuilder]: For program point recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L762 garLoopResultBuilder]: For program point recFINAL(lines 9 17) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L762 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:24,317 INFO L758 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:11:24,318 INFO L762 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-07-06 15:11:24,318 INFO L762 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-07-06 15:11:24,318 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-06 15:11:24,318 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:24,321 INFO L303 ceAbstractionStarter]: Result for error location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/8) [2021-07-06 15:11:24,323 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:24,323 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 15:11:24,324 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:24,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 15:11:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 15:11:24,325 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:24,325 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:11:24,325 INFO L374 AbstractCegarLoop]: === Iteration 1 === [recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:24,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2040868585, now seen corresponding path program 1 times [2021-07-06 15:11:24,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:24,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789550844] [2021-07-06 15:11:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:24,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:11:24,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:11:24,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:11:24,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:11:24,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 15:11:24,342 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 15:11:24,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:11:24,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789550844] [2021-07-06 15:11:24,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789550844] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:11:24,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:11:24,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 15:11:24,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810035470] [2021-07-06 15:11:24,343 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 15:11:24,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:11:24,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 15:11:24,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:11:24,344 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:11:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:11:24,369 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2021-07-06 15:11:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 15:11:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-07-06 15:11:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:11:24,370 INFO L225 Difference]: With dead ends: 37 [2021-07-06 15:11:24,370 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:11:24,370 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 15:11:24,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:11:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:11:24,371 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 15:11:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:11:24,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 15:11:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:11:24,371 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:11:24,371 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:11:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:11:24,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:11:24,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:11:24,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:11:24,391 INFO L762 garLoopResultBuilder]: For program point recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,391 INFO L762 garLoopResultBuilder]: For program point recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,391 INFO L762 garLoopResultBuilder]: For program point recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,391 INFO L762 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,391 INFO L762 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,392 INFO L762 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,392 INFO L758 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (and (<= 1 (div rec_~x 2)) (or (not (<= |rec_#in~x| 2147483647)) (and (<= rec_~x 2147483647) (<= 1 rec_~x) (<= 2 |rec_#t~pre1|) (<= |rec_#t~pre1| 2147483647)))) [2021-07-06 15:11:24,392 INFO L762 garLoopResultBuilder]: For program point recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,392 INFO L762 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,392 INFO L762 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,392 INFO L758 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (div rec_~x 2))) (and (<= 1 .cse0) (or (and (= rec_~x |rec_#in~x|) (<= 1 rec_~x) (<= rec_~x (* 2 .cse0))) (not (<= |rec_#in~x| 2147483647))))) [2021-07-06 15:11:24,392 INFO L762 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,393 INFO L762 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,393 INFO L762 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,393 INFO L758 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (and (not (<= |rec_#in~x| 2147483647)) (<= 1 rec_~x)) [2021-07-06 15:11:24,393 INFO L762 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,393 INFO L762 garLoopResultBuilder]: For program point recEXIT(lines 9 17) no Hoare annotation was computed. [2021-07-06 15:11:24,393 INFO L762 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,393 INFO L762 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,394 INFO L765 garLoopResultBuilder]: At program point recENTRY(lines 9 17) the Hoare annotation is: true [2021-07-06 15:11:24,394 INFO L762 garLoopResultBuilder]: For program point recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,394 INFO L762 garLoopResultBuilder]: For program point recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,394 INFO L762 garLoopResultBuilder]: For program point recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-07-06 15:11:24,394 INFO L762 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2021-07-06 15:11:24,394 INFO L762 garLoopResultBuilder]: For program point recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-07-06 15:11:24,394 INFO L762 garLoopResultBuilder]: For program point recFINAL(lines 9 17) no Hoare annotation was computed. [2021-07-06 15:11:24,395 INFO L762 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2021-07-06 15:11:24,395 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:11:24,395 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:11:24,395 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:11:24,395 INFO L758 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-07-06 15:11:24,395 INFO L762 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-07-06 15:11:24,395 INFO L762 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-07-06 15:11:24,396 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-06 15:11:24,396 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:24,396 INFO L303 ceAbstractionStarter]: Result for error location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/8) [2021-07-06 15:11:24,397 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:11:24,398 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 15:11:24,398 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:11:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-07-06 15:11:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:11:24,399 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:11:24,399 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:11:24,399 INFO L374 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:11:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:11:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2021-07-06 15:11:24,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:11:24,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619554054] [2021-07-06 15:11:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:11:24,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:11:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 15:11:24,404 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 15:11:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 15:11:24,406 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 15:11:24,415 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 15:11:24,415 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 15:11:24,416 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-07-06 15:11:24,416 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:11:24,416 INFO L303 ceAbstractionStarter]: Result for error location recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW was UNSAFE (3/8) [2021-07-06 15:11:24,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:11:24 BoogieIcfgContainer [2021-07-06 15:11:24,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:11:24,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:11:24,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:11:24,428 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:11:24,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:11:22" (3/4) ... [2021-07-06 15:11:24,429 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 15:11:24,446 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:11:24,446 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:11:24,447 INFO L168 Benchmark]: Toolchain (without parser) took 2306.03 ms. Allocated memory was 50.3 MB in the beginning and 100.7 MB in the end (delta: 50.3 MB). Free memory was 27.9 MB in the beginning and 73.5 MB in the end (delta: -45.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:24,447 INFO L168 Benchmark]: CDTParser took 1.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 32.8 MB in the end (delta: 40.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:11:24,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.71 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 27.7 MB in the beginning and 51.3 MB in the end (delta: -23.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:24,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.61 ms. Allocated memory is still 67.1 MB. Free memory was 51.1 MB in the beginning and 50.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:24,448 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 51.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:24,448 INFO L168 Benchmark]: RCFGBuilder took 370.69 ms. Allocated memory is still 67.1 MB. Free memory was 51.3 MB in the beginning and 39.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:24,448 INFO L168 Benchmark]: TraceAbstraction took 1712.61 ms. Allocated memory was 67.1 MB in the beginning and 100.7 MB in the end (delta: 33.6 MB). Free memory was 39.1 MB in the beginning and 75.5 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:11:24,448 INFO L168 Benchmark]: Witness Printer took 18.50 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 73.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:11:24,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 32.8 MB in the end (delta: 40.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 146.71 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 27.7 MB in the beginning and 51.3 MB in the end (delta: -23.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 17.61 ms. Allocated memory is still 67.1 MB. Free memory was 51.1 MB in the beginning and 50.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.48 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 51.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 370.69 ms. Allocated memory is still 67.1 MB. Free memory was 51.3 MB in the beginning and 39.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1712.61 ms. Allocated memory was 67.1 MB in the beginning and 100.7 MB in the end (delta: 33.6 MB). Free memory was 39.1 MB in the beginning and 75.5 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 18.50 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 73.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - StatisticsResult: Ultimate Automizer benchmark data for error location: recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 2 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 1543.4ms, OverallIterations: 4, TraceHistogramMax: 5, EmptinessCheckTime: 8.8ms, AutomataDifference: 667.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 84.6ms, InitialAbstractionConstructionTime: 22.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 136 SDslu, 175 SDs, 0 SdLazy, 270 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 245.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 392.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 91.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 77 PreInvPairs, 77 NumberOfFragments, 45 HoareAnnotationTreeSize, 77 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 40.7ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 37.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.0ms SsaConstructionTime, 110.7ms SatisfiabilityAnalysisTime, 377.8ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 43/43 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: recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 2 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 73.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 26.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 19.2ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 25 SDslu, 17 SDs, 0 SdLazy, 19 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 15 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 13.5ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3ms SsaConstructionTime, 3.1ms SatisfiabilityAnalysisTime, 11.4ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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: recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 2 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 18.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2ms SsaConstructionTime, 2.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-06 15:11:24,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...