./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/BradleyMannaSipma-ICALP2005-Fig1.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 d50c9e2c4d6ea0adce599ea0d63e463f6e274ffe .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:23:53,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:23:53,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:23:53,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:23:53,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:23:53,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:23:53,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:23:53,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:23:53,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:23:53,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:23:53,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:23:53,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:23:53,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:23:53,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:23:53,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:23:53,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:23:53,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:23:53,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:23:53,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:23:53,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:23:53,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:23:53,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:23:53,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:23:53,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:23:53,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:23:53,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:23:53,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:23:53,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:23:53,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:23:53,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:23:53,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:23:53,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:23:53,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:23:53,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:23:53,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:23:53,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:23:53,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:23:53,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:23:53,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:23:53,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:23:53,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:23:53,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:23:53,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:23:53,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:23:53,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:23:53,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:23:53,614 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:23:53,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:23:53,615 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:23:53,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:23:53,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:23:53,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:23:53,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:23:53,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:23:53,616 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:23:53,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:23:53,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:23:53,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:23:53,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:23:53,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:23:53,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:23:53,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:23:53,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:23:53,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:23:53,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:23:53,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:23:53,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:23:53,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:23:53,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:23:53,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:23:53,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> d50c9e2c4d6ea0adce599ea0d63e463f6e274ffe [2020-10-20 06:23:53,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:23:53,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:23:53,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:23:53,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:23:53,842 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:23:53,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c [2020-10-20 06:23:53,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbcf9679/83a352fee75d414aa5fc6430cdb2d851/FLAG2eecd52d9 [2020-10-20 06:23:54,372 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:23:54,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c [2020-10-20 06:23:54,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbcf9679/83a352fee75d414aa5fc6430cdb2d851/FLAG2eecd52d9 [2020-10-20 06:23:54,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbcf9679/83a352fee75d414aa5fc6430cdb2d851 [2020-10-20 06:23:54,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:23:54,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:23:54,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:23:54,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:23:54,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:23:54,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:23:54" (1/1) ... [2020-10-20 06:23:54,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11987d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:54, skipping insertion in model container [2020-10-20 06:23:54,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:23:54" (1/1) ... [2020-10-20 06:23:54,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:23:54,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:23:55,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:23:55,046 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:23:55,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:23:55,072 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:23:55,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55 WrapperNode [2020-10-20 06:23:55,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:23:55,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:23:55,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:23:55,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:23:55,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:23:55,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:23:55,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:23:55,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:23:55,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... [2020-10-20 06:23:55,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:23:55,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:23:55,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:23:55,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:23:55,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:23:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:23:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:23:55,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:23:55,401 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:23:55,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:23:55 BoogieIcfgContainer [2020-10-20 06:23:55,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:23:55,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:23:55,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:23:55,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:23:55,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:23:54" (1/3) ... [2020-10-20 06:23:55,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f302c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:23:55, skipping insertion in model container [2020-10-20 06:23:55,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:55" (2/3) ... [2020-10-20 06:23:55,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f302c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:23:55, skipping insertion in model container [2020-10-20 06:23:55,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:23:55" (3/3) ... [2020-10-20 06:23:55,412 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-ICALP2005-Fig1.c [2020-10-20 06:23:55,425 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:23:55,433 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-20 06:23:55,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-20 06:23:55,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:23:55,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:23:55,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:23:55,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:23:55,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:23:55,510 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:23:55,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:23:55,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:23:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-20 06:23:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:23:55,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:55,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:23:55,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2020-10-20 06:23:55,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:55,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219769936] [2020-10-20 06:23:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:55,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219769936] [2020-10-20 06:23:55,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:55,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:55,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600385892] [2020-10-20 06:23:55,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:55,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:55,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:55,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:55,745 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-20 06:23:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:55,941 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-20 06:23:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:55,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-20 06:23:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:55,957 INFO L225 Difference]: With dead ends: 51 [2020-10-20 06:23:55,957 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 06:23:55,964 INFO L677 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 [2020-10-20 06:23:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 06:23:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2020-10-20 06:23:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:23:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-20 06:23:56,020 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 3 [2020-10-20 06:23:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:56,021 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-20 06:23:56,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-20 06:23:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:23:56,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:56,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:23:56,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:23:56,028 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash 957349, now seen corresponding path program 1 times [2020-10-20 06:23:56,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:56,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471060988] [2020-10-20 06:23:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:23:56,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:23:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:23:56,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:23:56,096 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:23:56,096 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:23:56,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:23:56,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:23:56 BoogieIcfgContainer [2020-10-20 06:23:56,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:23:56,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:23:56,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:23:56,116 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:23:56,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:23:55" (3/4) ... [2020-10-20 06:23:56,119 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:23:56,159 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:23:56,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:23:56,162 INFO L168 Benchmark]: Toolchain (without parser) took 1409.12 ms. Allocated memory was 35.7 MB in the beginning and 47.2 MB in the end (delta: 11.5 MB). Free memory was 16.5 MB in the beginning and 25.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,163 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 34.1 MB. Free memory was 10.7 MB in the beginning and 10.7 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.38 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.6 MB in the beginning and 26.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.03 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 25.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,165 INFO L168 Benchmark]: Boogie Preprocessor took 20.70 ms. Allocated memory is still 44.0 MB. Free memory was 25.1 MB in the beginning and 23.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,166 INFO L168 Benchmark]: RCFGBuilder took 279.22 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 23.9 MB in the beginning and 23.8 MB in the end (delta: 174.6 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,167 INFO L168 Benchmark]: TraceAbstraction took 710.58 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 23.3 MB in the beginning and 27.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,168 INFO L168 Benchmark]: Witness Printer took 43.36 ms. Allocated memory is still 47.2 MB. Free memory was 27.7 MB in the beginning and 25.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:56,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 34.1 MB. Free memory was 10.7 MB in the beginning and 10.7 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 315.38 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.6 MB in the beginning and 26.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 29.03 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 25.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 20.70 ms. Allocated memory is still 44.0 MB. Free memory was 25.1 MB in the beginning and 23.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 279.22 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 23.9 MB in the beginning and 23.8 MB in the end (delta: 174.6 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 710.58 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 23.3 MB in the beginning and 27.7 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * Witness Printer took 43.36 ms. Allocated memory is still 47.2 MB. Free memory was 27.7 MB in the beginning and 25.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y, N; [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] N = __VERIFIER_nondet_int() [L21] COND TRUE N < 536870912 && x < 536870912 && y < 536870912 && x >= -1073741824 [L22] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 22 SDslu, 5 SDs, 0 SdLazy, 39 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, 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=29occurred in iteration=0, 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, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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! Received shutdown request...