./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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/ChenFlurMukhopadhyay-SAS2012-Ex1.01.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 aa697a475c49321da2603bdfc0567fabd3dba636e959809581c2a2756f669475 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:45:12,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:45:12,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:45:12,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:45:12,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:45:12,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:45:12,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:45:12,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:45:12,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:45:12,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:45:12,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:45:12,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:45:12,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:45:12,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:45:12,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:45:12,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:45:12,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:45:12,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:45:12,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:45:12,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:45:12,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:45:12,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:45:12,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:45:12,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:45:12,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:45:12,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:45:12,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:45:12,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:45:12,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:45:12,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:45:12,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:45:12,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:45:12,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:45:12,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:45:12,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:45:12,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:45:12,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:45:12,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:45:12,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:45:12,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:45:12,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:45:12,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-21 20:45:12,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:45:12,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:45:12,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:45:12,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:45:12,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:45:12,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:45:12,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:45:12,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:45:12,494 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:45:12,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:45:12,494 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:45:12,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:45:12,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:45:12,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:45:12,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:45:12,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:45:12,495 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:45:12,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:45:12,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:45:12,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:45:12,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:45:12,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:45:12,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:45:12,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:45:12,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:45:12,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:45:12,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:45:12,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:45:12,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:45:12,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:45:12,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:45:12,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa697a475c49321da2603bdfc0567fabd3dba636e959809581c2a2756f669475 [2021-12-21 20:45:12,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:45:12,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:45:12,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:45:12,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:45:12,695 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:45:12,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c [2021-12-21 20:45:12,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f1de752/ac0f192a1ac14d67ad4168d114e557e8/FLAGfe19db59e [2021-12-21 20:45:13,071 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:45:13,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.01.c [2021-12-21 20:45:13,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f1de752/ac0f192a1ac14d67ad4168d114e557e8/FLAGfe19db59e [2021-12-21 20:45:13,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27f1de752/ac0f192a1ac14d67ad4168d114e557e8 [2021-12-21 20:45:13,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:45:13,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:45:13,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:45:13,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:45:13,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:45:13,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656b76fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13, skipping insertion in model container [2021-12-21 20:45:13,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:45:13,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:45:13,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:45:13,672 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:45:13,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:45:13,689 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:45:13,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13 WrapperNode [2021-12-21 20:45:13,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:45:13,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:45:13,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:45:13,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:45:13,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,706 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2021-12-21 20:45:13,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:45:13,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:45:13,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:45:13,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:45:13,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:45:13,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:45:13,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:45:13,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:45:13,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (1/1) ... [2021-12-21 20:45:13,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:45:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:45:13,750 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) [2021-12-21 20:45:13,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 20:45:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:45:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:45:13,813 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:45:13,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:45:13,871 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:45:13,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:45:13,876 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 20:45:13,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:45:13 BoogieIcfgContainer [2021-12-21 20:45:13,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:45:13,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:45:13,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:45:13,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:45:13,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:45:13" (1/3) ... [2021-12-21 20:45:13,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfa690d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:45:13, skipping insertion in model container [2021-12-21 20:45:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:45:13" (2/3) ... [2021-12-21 20:45:13,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfa690d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:45:13, skipping insertion in model container [2021-12-21 20:45:13,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:45:13" (3/3) ... [2021-12-21 20:45:13,885 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.01.c [2021-12-21 20:45:13,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:45:13,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-21 20:45:13,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:45:13,923 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, mAutomataTypeConcurrency=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 [2021-12-21 20:45:13,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 20:45:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-12-21 20:45:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-21 20:45:13,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:45:13,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-21 20:45:13,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-21 20:45:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:45:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2021-12-21 20:45:13,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:45:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369471634] [2021-12-21 20:45:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:45:13,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:45:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:45:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:45:14,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:45:14,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369471634] [2021-12-21 20:45:14,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369471634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:45:14,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:45:14,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:45:14,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199948232] [2021-12-21 20:45:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:45:14,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:45:14,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:45:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:45:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:45:14,102 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:45:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:45:14,148 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-12-21 20:45:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:45:14,150 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 [2021-12-21 20:45:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:45:14,155 INFO L225 Difference]: With dead ends: 19 [2021-12-21 20:45:14,155 INFO L226 Difference]: Without dead ends: 9 [2021-12-21 20:45:14,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:45:14,159 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:45:14,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:45:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-21 20:45:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-21 20:45:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-12-21 20:45:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-21 20:45:14,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2021-12-21 20:45:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:45:14,194 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-21 20:45:14,194 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) [2021-12-21 20:45:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-21 20:45:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 20:45:14,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:45:14,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 20:45:14,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:45:14,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-21 20:45:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:45:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2021-12-21 20:45:14,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:45:14,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173501219] [2021-12-21 20:45:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:45:14,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:45:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:45:14,204 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 20:45:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 20:45:14,215 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 20:45:14,215 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 20:45:14,216 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-12-21 20:45:14,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-12-21 20:45:14,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-12-21 20:45:14,218 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-12-21 20:45:14,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:45:14,221 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 20:45:14,223 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 20:45:14,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:45:14 BoogieIcfgContainer [2021-12-21 20:45:14,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 20:45:14,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 20:45:14,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 20:45:14,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 20:45:14,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:45:13" (3/4) ... [2021-12-21 20:45:14,255 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 20:45:14,278 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 20:45:14,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 20:45:14,279 INFO L158 Benchmark]: Toolchain (without parser) took 754.57ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 53.0MB in the end (delta: 23.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,279 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 35.4MB in the beginning and 35.4MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 20:45:14,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.49ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 87.0MB in the end (delta: -10.3MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.56ms. Allocated memory is still 111.1MB. Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,280 INFO L158 Benchmark]: Boogie Preprocessor took 15.52ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 84.9MB in the end (delta: 414.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,281 INFO L158 Benchmark]: RCFGBuilder took 154.31ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 76.6MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,281 INFO L158 Benchmark]: TraceAbstraction took 374.00ms. Allocated memory is still 111.1MB. Free memory was 76.0MB in the beginning and 54.5MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,282 INFO L158 Benchmark]: Witness Printer took 25.26ms. Allocated memory is still 111.1MB. Free memory was 54.0MB in the beginning and 53.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 20:45:14,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 35.4MB in the beginning and 35.4MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.49ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 87.0MB in the end (delta: -10.3MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.56ms. Allocated memory is still 111.1MB. Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.52ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 84.9MB in the end (delta: 414.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 154.31ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 76.6MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 374.00ms. Allocated memory is still 111.1MB. Free memory was 76.0MB in the beginning and 54.5MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 25.26ms. Allocated memory is still 111.1MB. Free memory was 54.0MB in the beginning and 53.0MB in the end (delta: 1.0MB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x; [L24] x = __VERIFIER_nondet_int() [L25] COND TRUE x > 0 VAL [x=1073741825] [L26] -2*x VAL [x=1073741825] - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-21 20:45:14,326 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)