./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Singapore_plus.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/Singapore_plus.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 77bbe6e41bc18d2251402b3dafc3ae4df1f7b97b .................................................................................................................................................................................................................................. 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 14:55:22,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 14:55:22,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 14:55:22,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 14:55:22,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 14:55:22,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 14:55:22,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 14:55:22,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 14:55:22,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 14:55:22,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 14:55:22,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 14:55:22,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 14:55:22,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 14:55:22,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 14:55:22,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 14:55:22,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 14:55:22,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 14:55:22,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 14:55:22,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 14:55:22,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 14:55:22,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 14:55:22,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 14:55:22,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 14:55:22,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 14:55:22,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 14:55:22,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 14:55:22,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 14:55:22,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 14:55:22,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 14:55:22,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 14:55:22,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 14:55:22,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 14:55:22,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 14:55:22,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 14:55:22,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 14:55:22,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 14:55:22,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 14:55:22,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 14:55:22,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 14:55:22,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 14:55:22,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 14:55:22,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 14:55:22,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 14:55:22,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 14:55:22,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 14:55:22,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 14:55:22,624 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 14:55:22,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 14:55:22,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 14:55:22,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 14:55:22,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 14:55:22,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 14:55:22,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 14:55:22,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 14:55:22,625 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 14:55:22,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 14:55:22,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 14:55:22,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 14:55:22,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 14:55:22,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 14:55:22,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 14:55:22,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 14:55:22,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 14:55:22,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 14:55:22,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 14:55:22,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 14:55:22,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 14:55:22,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 14:55:22,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 14:55:22,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77bbe6e41bc18d2251402b3dafc3ae4df1f7b97b [2021-07-06 14:55:22,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 14:55:22,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 14:55:22,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 14:55:22,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 14:55:22,920 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 14:55:22,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Singapore_plus.c [2021-07-06 14:55:22,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c91c5f4/bf56b323555f4d92a91a45f3b732bd80/FLAG859d5746a [2021-07-06 14:55:23,297 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 14:55:23,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Singapore_plus.c [2021-07-06 14:55:23,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c91c5f4/bf56b323555f4d92a91a45f3b732bd80/FLAG859d5746a [2021-07-06 14:55:23,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c91c5f4/bf56b323555f4d92a91a45f3b732bd80 [2021-07-06 14:55:23,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 14:55:23,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 14:55:23,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 14:55:23,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 14:55:23,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 14:55:23,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730df78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23, skipping insertion in model container [2021-07-06 14:55:23,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 14:55:23,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 14:55:23,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 14:55:23,859 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 14:55:23,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 14:55:23,875 INFO L208 MainTranslator]: Completed translation [2021-07-06 14:55:23,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23 WrapperNode [2021-07-06 14:55:23,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 14:55:23,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 14:55:23,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 14:55:23,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 14:55:23,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 14:55:23,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 14:55:23,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 14:55:23,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 14:55:23,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 14:55:23,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 14:55:23,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 14:55:23,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 14:55:23,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (1/1) ... [2021-07-06 14:55:23,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 14:55:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 14:55:23,951 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 14:55:23,967 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 14:55:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 14:55:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 14:55:24,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 14:55:24,167 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 14:55:24,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:24 BoogieIcfgContainer [2021-07-06 14:55:24,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 14:55:24,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 14:55:24,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 14:55:24,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 14:55:24,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 02:55:23" (1/3) ... [2021-07-06 14:55:24,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc72815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 02:55:24, skipping insertion in model container [2021-07-06 14:55:24,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 02:55:23" (2/3) ... [2021-07-06 14:55:24,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc72815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 02:55:24, skipping insertion in model container [2021-07-06 14:55:24,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:24" (3/3) ... [2021-07-06 14:55:24,174 INFO L111 eAbstractionObserver]: Analyzing ICFG Singapore_plus.c [2021-07-06 14:55:24,181 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 14:55:24,181 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-07-06 14:55:24,219 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 14:55:24,226 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 14:55:24,227 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 14:55:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 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 14:55:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-07-06 14:55:24,243 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 14:55:24,243 INFO L525 BasicCegarLoop]: trace histogram [1, 1] [2021-07-06 14:55:24,244 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 14:55:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 14:55:24,249 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2021-07-06 14:55:24,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 14:55:24,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063667882] [2021-07-06 14:55:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 14:55:24,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 14:55:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 14:55:24,318 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 14:55:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 14:55:24,327 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 14:55:24,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 14:55:24,339 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 14:55:24,342 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 14:55:24,343 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 14:55:24,346 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was UNSAFE (1/8) [2021-07-06 14:55:24,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 02:55:24 BoogieIcfgContainer [2021-07-06 14:55:24,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 14:55:24,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 14:55:24,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 14:55:24,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 14:55:24,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 02:55:24" (3/4) ... [2021-07-06 14:55:24,362 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 14:55:24,390 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 14:55:24,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 14:55:24,392 INFO L168 Benchmark]: Toolchain (without parser) took 646.57 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 48.0 MB in the beginning and 60.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:24,393 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 14:55:24,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 39.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:24,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.00 ms. Allocated memory is still 67.1 MB. Free memory was 39.4 MB in the beginning and 51.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:24,394 INFO L168 Benchmark]: Boogie Preprocessor took 12.89 ms. Allocated memory is still 67.1 MB. Free memory was 51.7 MB in the beginning and 50.8 MB in the end (delta: 834.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 14:55:24,396 INFO L168 Benchmark]: RCFGBuilder took 236.05 ms. Allocated memory is still 67.1 MB. Free memory was 50.8 MB in the beginning and 40.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:24,397 INFO L168 Benchmark]: TraceAbstraction took 188.72 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 62.4 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 14:55:24,397 INFO L168 Benchmark]: Witness Printer took 30.74 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 60.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 14:55:24,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 67.1 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 128.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.9 MB in the beginning and 39.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.00 ms. Allocated memory is still 67.1 MB. Free memory was 39.4 MB in the beginning and 51.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.89 ms. Allocated memory is still 67.1 MB. Free memory was 51.7 MB in the beginning and 50.8 MB in the end (delta: 834.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 236.05 ms. Allocated memory is still 67.1 MB. Free memory was 50.8 MB in the beginning and 40.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 188.72 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.9 MB in the beginning and 62.4 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 30.74 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 60.8 MB in the end (delta: 1.6 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 - CounterExampleResult [Line: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] x + y - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 128.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: 3.4ms SsaConstructionTime, 13.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 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 14:55:24,432 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...