./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ff3652fa62b489d4e6a4a85c8349c06d13bd2232 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:21:46,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:21:46,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:21:46,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:21:46,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:21:46,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:21:46,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:21:46,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:21:46,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:21:46,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:21:46,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:21:46,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:21:46,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:21:46,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:21:46,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:21:46,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:21:46,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:21:46,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:21:46,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:21:46,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:21:46,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:21:46,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:21:46,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:21:46,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:21:46,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:21:46,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:21:46,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:21:46,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:21:46,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:21:46,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:21:46,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:21:46,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:21:46,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:21:46,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:21:46,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:21:46,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:21:46,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:21:46,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:21:46,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:21:46,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:21:46,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:21:46,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-30 22:21:46,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:21:46,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:21:46,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:21:46,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:21:46,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:21:46,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:21:46,745 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:21:46,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:21:46,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:21:46,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:21:46,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:21:46,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:21:46,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:21:46,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:21:46,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:21:46,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:21:46,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:21:46,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:21:46,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:21:46,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:21:46,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:21:46,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:21:46,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:21:46,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2021-08-30 22:21:47,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:21:47,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:21:47,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:21:47,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:21:47,033 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:21:47,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-08-30 22:21:47,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b575d4e0/07a351e6ce8547e2a5210dc1fe64cbab/FLAGfaa21d4a0 [2021-08-30 22:21:47,444 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:21:47,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-08-30 22:21:47,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b575d4e0/07a351e6ce8547e2a5210dc1fe64cbab/FLAGfaa21d4a0 [2021-08-30 22:21:47,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b575d4e0/07a351e6ce8547e2a5210dc1fe64cbab [2021-08-30 22:21:47,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:21:47,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:21:47,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:21:47,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:21:47,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:21:47,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:21:47" (1/1) ... [2021-08-30 22:21:47,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2f96c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:47, skipping insertion in model container [2021-08-30 22:21:47,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:21:47" (1/1) ... [2021-08-30 22:21:47,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:21:47,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:21:48,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:21:48,004 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:21:48,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:21:48,019 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:21:48,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48 WrapperNode [2021-08-30 22:21:48,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:21:48,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:21:48,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:21:48,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:21:48,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:21:48,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:21:48,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:21:48,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:21:48,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:21:48,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:21:48,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:21:48,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:21:48,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (1/1) ... [2021-08-30 22:21:48,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:21:48,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:21:48,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 22:21:48,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 22:21:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:21:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:21:48,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:21:48,227 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-30 22:21:48,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:21:48 BoogieIcfgContainer [2021-08-30 22:21:48,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:21:48,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:21:48,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:21:48,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:21:48,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:21:47" (1/3) ... [2021-08-30 22:21:48,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27155992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:21:48, skipping insertion in model container [2021-08-30 22:21:48,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:21:48" (2/3) ... [2021-08-30 22:21:48,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27155992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:21:48, skipping insertion in model container [2021-08-30 22:21:48,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:21:48" (3/3) ... [2021-08-30 22:21:48,235 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2021-08-30 22:21:48,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:21:48,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-30 22:21:48,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:21:48,281 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 22:21:48,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-30 22:21:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-30 22:21:48,298 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:21:48,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-30 22:21:48,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:21:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:21:48,304 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2021-08-30 22:21:48,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:21:48,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438956831] [2021-08-30 22:21:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:48,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:21:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:21:48,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438956831] [2021-08-30 22:21:48,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438956831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:21:48,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:21:48,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-30 22:21:48,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777363820] [2021-08-30 22:21:48,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:21:48,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:21:48,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:21:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,475 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:21:48,519 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2021-08-30 22:21:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:21:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-30 22:21:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:21:48,525 INFO L225 Difference]: With dead ends: 28 [2021-08-30 22:21:48,526 INFO L226 Difference]: Without dead ends: 10 [2021-08-30 22:21:48,527 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,529 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.92ms IncrementalHoareTripleChecker+Time [2021-08-30 22:21:48,530 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 31.92ms Time] [2021-08-30 22:21:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-30 22:21:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-08-30 22:21:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-08-30 22:21:48,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-08-30 22:21:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:21:48,563 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-08-30 22:21:48,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-08-30 22:21:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-30 22:21:48,564 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:21:48,564 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-30 22:21:48,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:21:48,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:21:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:21:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-08-30 22:21:48,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:21:48,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795800253] [2021-08-30 22:21:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:48,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:21:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:21:48,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795800253] [2021-08-30 22:21:48,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795800253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:21:48,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:21:48,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:21:48,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950607884] [2021-08-30 22:21:48,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:21:48,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:21:48,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:21:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,588 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:21:48,625 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-08-30 22:21:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:21:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-30 22:21:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:21:48,626 INFO L225 Difference]: With dead ends: 18 [2021-08-30 22:21:48,626 INFO L226 Difference]: Without dead ends: 17 [2021-08-30 22:21:48,627 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,628 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.82ms IncrementalHoareTripleChecker+Time [2021-08-30 22:21:48,630 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.25ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 34.82ms Time] [2021-08-30 22:21:48,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-30 22:21:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-08-30 22:21:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-30 22:21:48,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2021-08-30 22:21:48,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:21:48,637 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-30 22:21:48,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,637 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-08-30 22:21:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-30 22:21:48,638 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:21:48,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-30 22:21:48,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:21:48,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:21:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:21:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash 29867816, now seen corresponding path program 1 times [2021-08-30 22:21:48,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:21:48,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606605333] [2021-08-30 22:21:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:48,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:21:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:21:48,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606605333] [2021-08-30 22:21:48,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606605333] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:21:48,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:21:48,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:21:48,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499310342] [2021-08-30 22:21:48,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:21:48,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:21:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:21:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,666 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:21:48,677 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-08-30 22:21:48,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:21:48,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-30 22:21:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:21:48,678 INFO L225 Difference]: With dead ends: 12 [2021-08-30 22:21:48,678 INFO L226 Difference]: Without dead ends: 11 [2021-08-30 22:21:48,679 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,680 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.02ms IncrementalHoareTripleChecker+Time [2021-08-30 22:21:48,680 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.13ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 10.02ms Time] [2021-08-30 22:21:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-30 22:21:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-30 22:21:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-08-30 22:21:48,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2021-08-30 22:21:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:21:48,683 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-08-30 22:21:48,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-08-30 22:21:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-30 22:21:48,684 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:21:48,684 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-30 22:21:48,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 22:21:48,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:21:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:21:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-08-30 22:21:48,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:21:48,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949336112] [2021-08-30 22:21:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:48,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:21:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:21:48,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949336112] [2021-08-30 22:21:48,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949336112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:21:48,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:21:48,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:21:48,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897326682] [2021-08-30 22:21:48,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:21:48,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:21:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:21:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,700 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:21:48,711 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-08-30 22:21:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:21:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-30 22:21:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:21:48,712 INFO L225 Difference]: With dead ends: 12 [2021-08-30 22:21:48,712 INFO L226 Difference]: Without dead ends: 11 [2021-08-30 22:21:48,712 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:21:48,713 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.58ms IncrementalHoareTripleChecker+Time [2021-08-30 22:21:48,714 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 12 Unknown, 0 Unchecked, 0.10ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 8.58ms Time] [2021-08-30 22:21:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-30 22:21:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-08-30 22:21:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-08-30 22:21:48,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2021-08-30 22:21:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:21:48,716 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-08-30 22:21:48,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-08-30 22:21:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 22:21:48,723 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:21:48,723 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-08-30 22:21:48,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 22:21:48,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:21:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:21:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2021-08-30 22:21:48,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:21:48,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529740464] [2021-08-30 22:21:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:48,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:21:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:21:48,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529740464] [2021-08-30 22:21:48,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529740464] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:21:48,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310824550] [2021-08-30 22:21:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:48,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:21:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:21:48,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:21:48,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:21:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:48,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 22:21:48,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:21:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:21:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:21:48,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310824550] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:21:48,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:21:48,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-08-30 22:21:48,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232466177] [2021-08-30 22:21:48,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 22:21:48,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:21:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 22:21:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:21:48,846 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:21:48,900 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-08-30 22:21:48,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:21:48,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-30 22:21:48,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:21:48,902 INFO L225 Difference]: With dead ends: 32 [2021-08-30 22:21:48,902 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 22:21:48,902 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.84ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-30 22:21:48,903 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.58ms IncrementalHoareTripleChecker+Time [2021-08-30 22:21:48,903 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 45.58ms Time] [2021-08-30 22:21:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 22:21:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-08-30 22:21:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-08-30 22:21:48,907 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 7 [2021-08-30 22:21:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:21:48,908 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-08-30 22:21:48,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-08-30 22:21:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 22:21:48,909 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:21:48,909 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2021-08-30 22:21:48,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:21:49,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:21:49,132 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:21:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:21:49,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1477250187, now seen corresponding path program 2 times [2021-08-30 22:21:49,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:21:49,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737293383] [2021-08-30 22:21:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:21:49,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:21:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:21:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 22:21:49,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:21:49,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737293383] [2021-08-30 22:21:49,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737293383] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:21:49,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833734805] [2021-08-30 22:21:49,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:21:49,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:21:49,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:21:49,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:21:49,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 22:21:49,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 22:21:49,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:21:49,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 22:21:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:21:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 22:21:49,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:21:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 22:21:49,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833734805] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:21:49,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:21:49,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-08-30 22:21:49,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998585796] [2021-08-30 22:21:49,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 22:21:49,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:21:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 22:21:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 22:21:49,275 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:49,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:21:49,295 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-08-30 22:21:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 22:21:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-30 22:21:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:21:49,296 INFO L225 Difference]: With dead ends: 22 [2021-08-30 22:21:49,296 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 22:21:49,296 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:21:49,297 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.20ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.39ms IncrementalHoareTripleChecker+Time [2021-08-30 22:21:49,297 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 18 Unknown, 0 Unchecked, 0.20ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 12.39ms Time] [2021-08-30 22:21:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 22:21:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 22:21:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 22:21:49,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-08-30 22:21:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:21:49,298 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 22:21:49,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:21:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 22:21:49,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 22:21:49,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-08-30 22:21:49,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-08-30 22:21:49,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-08-30 22:21:49,301 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-08-30 22:21:49,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 22:21:49,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-30 22:21:49,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-30 22:21:49,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:21:49,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:21:49,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:21:49,552 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-30 22:21:49,553 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-30 22:21:49,553 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-30 22:21:49,554 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-08-30 22:21:49,554 INFO L858 garLoopResultBuilder]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2021-08-30 22:21:49,554 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-30 22:21:49,554 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2021-08-30 22:21:49,554 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-30 22:21:49,554 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-30 22:21:49,554 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-30 22:21:49,554 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-30 22:21:49,555 INFO L854 garLoopResultBuilder]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-08-30 22:21:49,556 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-30 22:21:49,556 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-08-30 22:21:49,556 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-08-30 22:21:49,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:21:49,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:21:49 BoogieIcfgContainer [2021-08-30 22:21:49,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:21:49,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:21:49,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:21:49,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:21:49,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:21:48" (3/4) ... [2021-08-30 22:21:49,571 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 22:21:49,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-30 22:21:49,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-30 22:21:49,592 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:21:49,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:21:49,593 INFO L158 Benchmark]: Toolchain (without parser) took 1702.57ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.5MB in the beginning and 35.0MB in the end (delta: -5.5MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2021-08-30 22:21:49,593 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:21:49,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 127.81ms. Allocated memory is still 52.4MB. Free memory was 29.4MB in the beginning and 34.8MB in the end (delta: -5.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-08-30 22:21:49,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.00ms. Allocated memory is still 52.4MB. Free memory was 34.8MB in the beginning and 33.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:21:49,593 INFO L158 Benchmark]: Boogie Preprocessor took 38.09ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 33.6MB in the beginning and 46.9MB in the end (delta: -13.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:21:49,594 INFO L158 Benchmark]: RCFGBuilder took 152.06ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 39.2MB in the end (delta: 7.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 22:21:49,594 INFO L158 Benchmark]: TraceAbstraction took 1337.33ms. Allocated memory is still 62.9MB. Free memory was 38.6MB in the beginning and 37.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:21:49,594 INFO L158 Benchmark]: Witness Printer took 23.99ms. Allocated memory is still 62.9MB. Free memory was 37.1MB in the beginning and 35.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:21:49,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.4MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 127.81ms. Allocated memory is still 52.4MB. Free memory was 29.4MB in the beginning and 34.8MB in the end (delta: -5.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.00ms. Allocated memory is still 52.4MB. Free memory was 34.8MB in the beginning and 33.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.09ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 33.6MB in the beginning and 46.9MB in the end (delta: -13.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 152.06ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 39.2MB in the end (delta: 7.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1337.33ms. Allocated memory is still 62.9MB. Free memory was 38.6MB in the beginning and 37.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 23.99ms. Allocated memory is still 62.9MB. Free memory was 37.1MB in the beginning and 35.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1287.71ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 12.09ms, AutomataDifference: 240.53ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 33.89ms, InitialAbstractionConstructionTime: 7.74ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 143.31ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 100.34ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 0 mSDtfsCounter, 112 mSolverCounterSat, 1.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.72ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=5, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 36.88ms AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 16 HoareAnnotationTreeSize, 3 FomulaSimplifications, 357 FormulaSimplificationTreeSizeReduction, 24.51ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.98ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.62ms SsaConstructionTime, 45.17ms SatisfiabilityAnalysisTime, 289.54ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 219 SizeOfPredicates, 2 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 66/84 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && 0 <= x) && x <= 2147483647 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-30 22:21:49,619 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...