./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.16.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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-Ex2.16.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 49a260b41897f9175c064887b5a7e346062ed9cdacb52920f3bad2e734db5643 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:05:05,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:05:05,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:05:05,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:05:05,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:05:05,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:05:05,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:05:05,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:05:05,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:05:05,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:05:05,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:05:05,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:05:05,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:05:05,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:05:05,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:05:05,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:05:05,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:05:05,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:05:05,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:05:05,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:05:05,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:05:05,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:05:05,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:05:05,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:05:05,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:05:05,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:05:05,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:05:05,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:05:05,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:05:05,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:05:05,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:05:05,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:05:05,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:05:05,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:05:05,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:05:05,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:05:05,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:05:05,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:05:05,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:05:05,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:05:05,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:05:05,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-02-21 03:05:05,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:05:05,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:05:05,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:05:05,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:05:05,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-21 03:05:05,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-21 03:05:05,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:05:05,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:05:05,632 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:05:05,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:05:05,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:05:05,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:05:05,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:05:05,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-21 03:05:05,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:05:05,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:05:05,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-21 03:05:05,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:05:05,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:05:05,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-21 03:05:05,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-21 03:05:05,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:05:05,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-21 03:05:05,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-21 03:05:05,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49a260b41897f9175c064887b5a7e346062ed9cdacb52920f3bad2e734db5643 [2022-02-21 03:05:05,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:05:05,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:05:05,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:05:05,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:05:05,815 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:05:05,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.16.c [2022-02-21 03:05:05,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a47be8b/dfd0663e26cb408bb5a58067bf9e7ba2/FLAG233500946 [2022-02-21 03:05:06,254 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:05:06,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.16.c [2022-02-21 03:05:06,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a47be8b/dfd0663e26cb408bb5a58067bf9e7ba2/FLAG233500946 [2022-02-21 03:05:06,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a47be8b/dfd0663e26cb408bb5a58067bf9e7ba2 [2022-02-21 03:05:06,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:05:06,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:05:06,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:05:06,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:05:06,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:05:06,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25176a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06, skipping insertion in model container [2022-02-21 03:05:06,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:05:06,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:05:06,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:05:06,438 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:05:06,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:05:06,470 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:05:06,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06 WrapperNode [2022-02-21 03:05:06,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:05:06,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:05:06,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:05:06,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:05:06,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,493 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-02-21 03:05:06,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:05:06,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:05:06,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:05:06,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:05:06,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:05:06,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:05:06,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:05:06,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:05:06,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (1/1) ... [2022-02-21 03:05:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:05:06,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:05:06,532 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) [2022-02-21 03:05:06,538 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 [2022-02-21 03:05:06,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:05:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:05:06,605 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:05:06,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:05:06,707 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:05:06,712 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:05:06,712 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:05:06,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:05:06 BoogieIcfgContainer [2022-02-21 03:05:06,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:05:06,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-21 03:05:06,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-21 03:05:06,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-21 03:05:06,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:05:06" (1/3) ... [2022-02-21 03:05:06,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6674f272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:05:06, skipping insertion in model container [2022-02-21 03:05:06,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:05:06" (2/3) ... [2022-02-21 03:05:06,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6674f272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:05:06, skipping insertion in model container [2022-02-21 03:05:06,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:05:06" (3/3) ... [2022-02-21 03:05:06,719 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.16.c [2022-02-21 03:05:06,722 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-21 03:05:06,722 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-21 03:05:06,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-21 03:05:06,767 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 [2022-02-21 03:05:06,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-21 03:05:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 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) [2022-02-21 03:05:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-02-21 03:05:06,780 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:05:06,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-02-21 03:05:06,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-02-21 03:05:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:05:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2022-02-21 03:05:06,805 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:05:06,805 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695052079] [2022-02-21 03:05:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:05:06,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:05:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:05:06,932 INFO L290 TraceCheckUtils]: 0: Hoare triple {14#true} assume { :begin_inline_ULTIMATE.init } true; {14#true} is VALID [2022-02-21 03:05:06,934 INFO L290 TraceCheckUtils]: 1: Hoare triple {14#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;assume -2147483648 <= main_#t~nondet0#1 && main_#t~nondet0#1 <= 2147483647;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;assume -2147483648 <= main_#t~nondet1#1 && main_#t~nondet1#1 <= 2147483647;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; {16#(<= |ULTIMATE.start_main_~y~0#1| 2147483647)} is VALID [2022-02-21 03:05:06,935 INFO L290 TraceCheckUtils]: 2: Hoare triple {16#(<= |ULTIMATE.start_main_~y~0#1| 2147483647)} assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~y~0#1; {16#(<= |ULTIMATE.start_main_~y~0#1| 2147483647)} is VALID [2022-02-21 03:05:06,937 INFO L290 TraceCheckUtils]: 3: Hoare triple {16#(<= |ULTIMATE.start_main_~y~0#1| 2147483647)} assume !(main_~y~0#1 - 1 <= 2147483647); {15#false} is VALID [2022-02-21 03:05:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:05:06,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:05:06,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695052079] [2022-02-21 03:05:06,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695052079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:05:06,941 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:05:06,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-21 03:05:06,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944337749] [2022-02-21 03:05:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:05:06,946 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 [2022-02-21 03:05:06,948 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-21 03:05:06,950 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-21 03:05:06,961 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:05:06,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-21 03:05:06,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:05:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 03:05:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 03:05:06,985 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 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) 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) [2022-02-21 03:05:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:05:07,019 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-02-21 03:05:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 03:05:07,019 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 [2022-02-21 03:05:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-21 03:05:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-21 03:05:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2022-02-21 03:05:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-21 03:05:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2022-02-21 03:05:07,030 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 15 transitions. [2022-02-21 03:05:07,052 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:05:07,060 INFO L225 Difference]: With dead ends: 15 [2022-02-21 03:05:07,061 INFO L226 Difference]: Without dead ends: 6 [2022-02-21 03:05:07,063 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 [2022-02-21 03:05:07,072 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-21 03:05:07,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-21 03:05:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-02-21 03:05:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-02-21 03:05:07,108 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 03:05:07,109 INFO L82 GeneralOperation]: Start isEquivalent. First operand 6 states. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:05:07,109 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:05:07,110 INFO L87 Difference]: Start difference. First operand 6 states. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:05:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:05:07,111 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2022-02-21 03:05:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-02-21 03:05:07,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:05:07,112 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:05:07,112 INFO L74 IsIncluded]: Start isIncluded. First operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 6 states. [2022-02-21 03:05:07,112 INFO L87 Difference]: Start difference. First operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 6 states. [2022-02-21 03:05:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:05:07,114 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2022-02-21 03:05:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-02-21 03:05:07,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:05:07,114 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:05:07,114 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 03:05:07,114 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 03:05:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:05:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-02-21 03:05:07,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-02-21 03:05:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-21 03:05:07,118 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-02-21 03:05:07,118 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) [2022-02-21 03:05:07,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-02-21 03:05:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-21 03:05:07,119 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:05:07,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-21 03:05:07,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-21 03:05:07,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-02-21 03:05:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:05:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2022-02-21 03:05:07,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:05:07,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92980023] [2022-02-21 03:05:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:05:07,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:05:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:05:07,139 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:05:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:05:07,160 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:05:07,160 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-21 03:05:07,162 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-02-21 03:05:07,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-02-21 03:05:07,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-21 03:05:07,165 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-21 03:05:07,168 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-21 03:05:07,180 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-21 03:05:07,180 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-21 03:05:07,182 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-21 03:05:07,182 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-21 03:05:07,182 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-21 03:05:07,183 WARN L170 areAnnotationChecker]: L26-3 has no Hoare annotation [2022-02-21 03:05:07,183 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-02-21 03:05:07,183 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-02-21 03:05:07,183 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-02-21 03:05:07,183 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-02-21 03:05:07,184 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-02-21 03:05:07,187 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-21 03:05:07,188 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-21 03:05:07,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:05:07 BoogieIcfgContainer [2022-02-21 03:05:07,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-21 03:05:07,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:05:07,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:05:07,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:05:07,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:05:06" (3/4) ... [2022-02-21 03:05:07,192 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-02-21 03:05:07,217 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:05:07,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:05:07,221 INFO L158 Benchmark]: Toolchain (without parser) took 939.22ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 69.0MB in the beginning and 106.6MB in the end (delta: -37.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:05:07,222 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory was 56.1MB in the beginning and 56.0MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:05:07,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.52ms. Allocated memory is still 100.7MB. Free memory was 68.8MB in the beginning and 78.5MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:05:07,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.31ms. Allocated memory is still 100.7MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:05:07,223 INFO L158 Benchmark]: Boogie Preprocessor took 11.11ms. Allocated memory is still 100.7MB. Free memory was 77.3MB in the beginning and 76.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:05:07,225 INFO L158 Benchmark]: RCFGBuilder took 207.09ms. Allocated memory is still 100.7MB. Free memory was 76.2MB in the beginning and 67.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:05:07,225 INFO L158 Benchmark]: TraceAbstraction took 474.09ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 66.7MB in the beginning and 108.5MB in the end (delta: -41.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:05:07,225 INFO L158 Benchmark]: Witness Printer took 28.48ms. Allocated memory is still 138.4MB. Free memory was 108.5MB in the beginning and 106.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:05:07,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory was 56.1MB in the beginning and 56.0MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.52ms. Allocated memory is still 100.7MB. Free memory was 68.8MB in the beginning and 78.5MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.31ms. Allocated memory is still 100.7MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.11ms. Allocated memory is still 100.7MB. Free memory was 77.3MB in the beginning and 76.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 207.09ms. Allocated memory is still 100.7MB. Free memory was 76.2MB in the beginning and 67.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 474.09ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 66.7MB in the beginning and 108.5MB in the end (delta: -41.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.48ms. Allocated memory is still 138.4MB. Free memory was 108.5MB in the beginning and 106.6MB in the end (delta: 1.9MB). 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: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x > 0 [L27] x = y VAL [x=-2147483648, y=-2147483648] [L28] y - 1 VAL [x=-2147483648, y=-2147483648] - UnprovableResult [Line: 28]: 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, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 4 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=11occurred 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, 7 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! [2022-02-21 03:05:07,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- 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)