./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.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-Ex1.03.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 1cbace5580915338bbd4f6efe69f1fa46dac7d6ce729fb2189890b13c893a5f0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:04:53,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:04:53,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:04:53,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:04:53,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:04:53,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:04:53,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:04:53,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:04:53,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:04:53,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:04:53,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:04:53,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:04:53,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:04:53,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:04:53,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:04:53,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:04:53,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:04:53,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:04:53,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:04:53,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:04:53,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:04:53,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:04:53,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:04:53,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:04:53,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:04:53,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:04:53,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:04:53,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:04:53,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:04:53,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:04:53,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:04:53,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:04:53,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:04:53,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:04:53,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:04:53,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:04:53,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:04:53,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:04:53,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:04:53,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:04:53,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:04:53,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-02-21 03:04:53,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:04:53,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:04:53,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:04:53,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:04:53,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-21 03:04:53,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-21 03:04:53,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:04:53,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:04:53,693 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:04:53,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:04:53,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:04:53,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:04:53,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:04:53,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-21 03:04:53,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-21 03:04:53,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-21 03:04:53,695 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-02-21 03:04:53,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:04:53,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:04:53,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-21 03:04:53,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:04:53,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:04:53,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-21 03:04:53,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:04:53,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:04:53,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-21 03:04:53,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-21 03:04:53,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:04:53,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-21 03:04:53,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-21 03:04:53,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cbace5580915338bbd4f6efe69f1fa46dac7d6ce729fb2189890b13c893a5f0 [2022-02-21 03:04:53,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:04:53,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:04:53,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:04:53,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:04:53,900 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:04:53,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2022-02-21 03:04:53,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b406a72c/dc67ee5fc84d4e40a5c2bdb141e2dc0a/FLAG06fcb9242 [2022-02-21 03:04:54,329 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:04:54,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2022-02-21 03:04:54,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b406a72c/dc67ee5fc84d4e40a5c2bdb141e2dc0a/FLAG06fcb9242 [2022-02-21 03:04:54,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b406a72c/dc67ee5fc84d4e40a5c2bdb141e2dc0a [2022-02-21 03:04:54,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:04:54,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:04:54,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:04:54,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:04:54,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:04:54,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47695f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54, skipping insertion in model container [2022-02-21 03:04:54,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:04:54,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:04:54,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:04:54,525 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:04:54,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:04:54,552 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:04:54,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54 WrapperNode [2022-02-21 03:04:54,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:04:54,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:04:54,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:04:54,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:04:54,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,577 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-02-21 03:04:54,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:04:54,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:04:54,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:04:54,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:04:54,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:04:54,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:04:54,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:04:54,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:04:54,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (1/1) ... [2022-02-21 03:04:54,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:04:54,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:04:54,623 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 03:04:54,625 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 03:04:54,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:04:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:04:54,695 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:04:54,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:04:54,804 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:04:54,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:04:54,811 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:04:54,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:04:54 BoogieIcfgContainer [2022-02-21 03:04:54,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:04:54,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-21 03:04:54,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-21 03:04:54,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-21 03:04:54,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:04:54" (1/3) ... [2022-02-21 03:04:54,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab14ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:04:54, skipping insertion in model container [2022-02-21 03:04:54,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:04:54" (2/3) ... [2022-02-21 03:04:54,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab14ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:04:54, skipping insertion in model container [2022-02-21 03:04:54,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:04:54" (3/3) ... [2022-02-21 03:04:54,820 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2022-02-21 03:04:54,824 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-21 03:04:54,824 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-21 03:04:54,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-21 03:04:54,887 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 03:04:54,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-21 03:04:54,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 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 03:04:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-21 03:04:54,921 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:04:54,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-21 03:04:54,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-02-21 03:04:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:04:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash 28695781, now seen corresponding path program 1 times [2022-02-21 03:04:54,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:04:54,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886577588] [2022-02-21 03:04:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:04:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:04:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:04:55,165 INFO L290 TraceCheckUtils]: 0: Hoare triple {16#true} assume { :begin_inline_ULTIMATE.init } true; {16#true} is VALID [2022-02-21 03:04:55,165 INFO L290 TraceCheckUtils]: 1: Hoare triple {16#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_#t~nondet3#1, main_#t~short2#1, main_~x~0#1, main_~oldx~0#1;havoc main_~x~0#1;havoc main_~oldx~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_~oldx~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; {16#true} is VALID [2022-02-21 03:04:55,167 INFO L290 TraceCheckUtils]: 2: Hoare triple {16#true} main_#t~short2#1 := main_~x~0#1 > 1; {18#(or (<= 2 |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short2#1|))} is VALID [2022-02-21 03:04:55,168 INFO L290 TraceCheckUtils]: 3: Hoare triple {18#(or (<= 2 |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short2#1|))} assume main_#t~short2#1; {19#(<= 2 |ULTIMATE.start_main_~x~0#1|)} is VALID [2022-02-21 03:04:55,169 INFO L290 TraceCheckUtils]: 4: Hoare triple {19#(<= 2 |ULTIMATE.start_main_~x~0#1|)} assume !(-2 * main_~x~0#1 <= 2147483647); {17#false} is VALID [2022-02-21 03:04:55,170 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 03:04:55,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:04:55,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886577588] [2022-02-21 03:04:55,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886577588] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:04:55,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:04:55,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 03:04:55,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495661028] [2022-02-21 03:04:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:04:55,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-21 03:04:55,196 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-21 03:04:55,211 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:04:55,232 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:04:55,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-21 03:04:55,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:04:55,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-21 03:04:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-21 03:04:55,250 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 12 states have internal predecessors, (15), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:04:55,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:04:55,345 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-02-21 03:04:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-21 03:04:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-21 03:04:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-21 03:04:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:04:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-02-21 03:04:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:04:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-02-21 03:04:55,361 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 23 transitions. [2022-02-21 03:04:55,386 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:04:55,392 INFO L225 Difference]: With dead ends: 22 [2022-02-21 03:04:55,393 INFO L226 Difference]: Without dead ends: 9 [2022-02-21 03:04:55,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-21 03:04:55,401 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-21 03:04:55,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-21 03:04:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-02-21 03:04:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-02-21 03:04:55,418 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 03:04:55,419 INFO L82 GeneralOperation]: Start isEquivalent. First operand 9 states. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-02-21 03:04:55,419 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-02-21 03:04:55,420 INFO L87 Difference]: Start difference. First operand 9 states. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-02-21 03:04:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:04:55,421 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-02-21 03:04:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-02-21 03:04:55,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:04:55,421 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:04:55,421 INFO L74 IsIncluded]: Start isIncluded. First operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) Second operand 9 states. [2022-02-21 03:04:55,422 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) Second operand 9 states. [2022-02-21 03:04:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:04:55,423 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-02-21 03:04:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-02-21 03:04:55,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:04:55,423 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:04:55,423 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 03:04:55,423 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 03:04:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-02-21 03:04:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-02-21 03:04:55,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2022-02-21 03:04:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-21 03:04:55,425 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-02-21 03:04:55,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:04:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-02-21 03:04:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-21 03:04:55,426 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:04:55,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-21 03:04:55,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-21 03:04:55,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-02-21 03:04:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:04:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash 889569255, now seen corresponding path program 1 times [2022-02-21 03:04:55,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:04:55,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382197124] [2022-02-21 03:04:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:04:55,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:04:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:04:55,437 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:04:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:04:55,449 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:04:55,450 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-21 03:04:55,451 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-02-21 03:04:55,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-02-21 03:04:55,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-21 03:04:55,454 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-21 03:04:55,456 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-21 03:04:55,474 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-21 03:04:55,477 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-21 03:04:55,477 WARN L170 areAnnotationChecker]: L26-7 has no Hoare annotation [2022-02-21 03:04:55,477 WARN L170 areAnnotationChecker]: L26-7 has no Hoare annotation [2022-02-21 03:04:55,477 WARN L170 areAnnotationChecker]: L26-8 has no Hoare annotation [2022-02-21 03:04:55,477 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-02-21 03:04:55,478 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-02-21 03:04:55,478 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2022-02-21 03:04:55,478 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-21 03:04:55,478 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-21 03:04:55,482 WARN L170 areAnnotationChecker]: L26-5 has no Hoare annotation [2022-02-21 03:04:55,482 WARN L170 areAnnotationChecker]: L26-5 has no Hoare annotation [2022-02-21 03:04:55,483 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-21 03:04:55,483 WARN L170 areAnnotationChecker]: L26-3 has no Hoare annotation [2022-02-21 03:04:55,483 WARN L170 areAnnotationChecker]: L26-3 has no Hoare annotation [2022-02-21 03:04:55,483 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 03:04:55,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:04:55 BoogieIcfgContainer [2022-02-21 03:04:55,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-21 03:04:55,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:04:55,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:04:55,485 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:04:55,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:04:54" (3/4) ... [2022-02-21 03:04:55,487 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-02-21 03:04:55,508 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:04:55,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:04:55,509 INFO L158 Benchmark]: Toolchain (without parser) took 1155.55ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 62.6MB in the end (delta: -337.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:04:55,509 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 58.8MB in the beginning and 58.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:04:55,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.90ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 74.0MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:04:55,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.39ms. Allocated memory is still 96.5MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:04:55,510 INFO L158 Benchmark]: Boogie Preprocessor took 13.65ms. Allocated memory is still 96.5MB. Free memory was 72.6MB in the beginning and 71.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:04:55,510 INFO L158 Benchmark]: RCFGBuilder took 220.06ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 61.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 03:04:55,511 INFO L158 Benchmark]: TraceAbstraction took 670.31ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 64.2MB in the end (delta: -3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:04:55,511 INFO L158 Benchmark]: Witness Printer took 23.40ms. Allocated memory is still 96.5MB. Free memory was 64.2MB in the beginning and 62.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:04:55,512 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 0.14ms. Allocated memory is still 79.7MB. Free memory was 58.8MB in the beginning and 58.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.90ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 74.0MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.39ms. Allocated memory is still 96.5MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.65ms. Allocated memory is still 96.5MB. Free memory was 72.6MB in the beginning and 71.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 220.06ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 61.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 670.31ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 64.2MB in the end (delta: -3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 23.40ms. Allocated memory is still 96.5MB. Free memory was 64.2MB in the beginning and 62.6MB in the end (delta: 1.6MB). 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, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx VAL [x=1073741825, x=0, x > 1 && -2*x == oldx=1] [L26] -2*x VAL [x=0, x=1073741825, x > 1 && -2*x == oldx=1] - 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, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 03:04:55,536 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)