./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Masse-VMCAI2014-Ex6.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/Masse-VMCAI2014-Ex6.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 801fdcefad752bcfd47b632823abc481f1678557 ........................................................................................................................................................................................................................... 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 06:25:32,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:32,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:32,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:32,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:32,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:32,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:32,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:32,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:32,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:32,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:32,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:32,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:32,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:32,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:32,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:32,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:32,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:32,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:32,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:32,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:32,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:32,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:32,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:32,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:32,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:32,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:32,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:32,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:32,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:32,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:32,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:32,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:32,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:32,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:32,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:32,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:32,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:32,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:32,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:32,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:32,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:32,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:32,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:32,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:32,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:32,157 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:32,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:32,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:32,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:32,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:32,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:32,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:32,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:32,159 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:32,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:32,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:32,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:32,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:32,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:32,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:32,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:32,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:32,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:32,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:32,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:32,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:32,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:32,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:32,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:32,163 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 -> 801fdcefad752bcfd47b632823abc481f1678557 [2020-10-20 06:25:32,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:32,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:32,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:32,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:32,395 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:32,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Masse-VMCAI2014-Ex6.c [2020-10-20 06:25:32,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26060204b/5a5478c95e7d4bd6bd56c99a1deaba05/FLAG3b93850b6 [2020-10-20 06:25:32,956 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:32,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Masse-VMCAI2014-Ex6.c [2020-10-20 06:25:32,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26060204b/5a5478c95e7d4bd6bd56c99a1deaba05/FLAG3b93850b6 [2020-10-20 06:25:33,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26060204b/5a5478c95e7d4bd6bd56c99a1deaba05 [2020-10-20 06:25:33,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:33,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:33,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:33,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:33,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:33,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6577d051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33, skipping insertion in model container [2020-10-20 06:25:33,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:33,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:33,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:33,536 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:33,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:33,568 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:33,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33 WrapperNode [2020-10-20 06:25:33,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:33,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:33,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:33,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:33,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:33,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:33,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:33,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:33,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (1/1) ... [2020-10-20 06:25:33,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:33,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:33,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:33,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:33,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (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 06:25:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:33,886 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:33,886 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:25:33,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:33 BoogieIcfgContainer [2020-10-20 06:25:33,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:33,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:33,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:33,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:33,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:33" (1/3) ... [2020-10-20 06:25:33,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef07b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:33, skipping insertion in model container [2020-10-20 06:25:33,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:33" (2/3) ... [2020-10-20 06:25:33,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef07b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:33, skipping insertion in model container [2020-10-20 06:25:33,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:33" (3/3) ... [2020-10-20 06:25:33,898 INFO L111 eAbstractionObserver]: Analyzing ICFG Masse-VMCAI2014-Ex6.c [2020-10-20 06:25:33,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:33,918 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:25:33,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:25:33,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:33,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:33,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:33,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:33,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:33,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:33,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:33,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 06:25:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:25:33,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:33,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:25:33,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-20 06:25:34,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:34,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113941277] [2020-10-20 06:25:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:34,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:25:34,098 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:25:34,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:25:34,116 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:25:34,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:34,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:34 BoogieIcfgContainer [2020-10-20 06:25:34,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:34,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:34,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:34,131 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:34,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:33" (3/4) ... [2020-10-20 06:25:34,134 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:25:34,171 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:34,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:34,175 INFO L168 Benchmark]: Toolchain (without parser) took 846.67 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 22.3 MB in the beginning and 17.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,176 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 32.0 MB. Free memory was 9.3 MB in the beginning and 9.3 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.95 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 21.4 MB in the beginning and 26.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.89 ms. Allocated memory is still 44.6 MB. Free memory was 26.2 MB in the beginning and 24.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,178 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 44.6 MB. Free memory was 24.7 MB in the beginning and 23.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,179 INFO L168 Benchmark]: RCFGBuilder took 240.47 ms. Allocated memory is still 44.6 MB. Free memory was 23.5 MB in the beginning and 13.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,180 INFO L168 Benchmark]: TraceAbstraction took 240.52 ms. Allocated memory is still 44.6 MB. Free memory was 13.5 MB in the beginning and 19.0 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:25:34,181 INFO L168 Benchmark]: Witness Printer took 41.31 ms. Allocated memory is still 44.6 MB. Free memory was 18.7 MB in the beginning and 17.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:34,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 32.0 MB. Free memory was 9.3 MB in the beginning and 9.3 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 235.95 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 21.4 MB in the beginning and 26.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 42.89 ms. Allocated memory is still 44.6 MB. Free memory was 26.2 MB in the beginning and 24.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 44.6 MB. Free memory was 24.7 MB in the beginning and 23.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 240.47 ms. Allocated memory is still 44.6 MB. Free memory was 23.5 MB in the beginning and 13.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 240.52 ms. Allocated memory is still 44.6 MB. Free memory was 13.5 MB in the beginning and 19.0 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 41.31 ms. Allocated memory is still 44.6 MB. Free memory was 18.7 MB in the beginning and 17.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE x >= 0 [L18] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...