./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.04.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/ChenFlurMukhopadhyay-SAS2012-Ex2.04.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 1770b13b2d376015ba74d62efd831f9c697d4bdd ........................................................................................................................................................................................................................... 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 06:24:31,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:24:31,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:24:31,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:24:31,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:24:31,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:24:31,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:24:31,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:24:31,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:24:31,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:24:31,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:24:31,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:24:31,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:24:31,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:24:31,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:24:31,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:24:31,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:24:31,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:24:31,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:24:31,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:24:31,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:24:31,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:24:31,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:24:31,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:24:31,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:24:31,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:24:31,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:24:31,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:24:31,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:24:31,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:24:31,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:24:31,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:24:31,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:24:31,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:24:31,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:24:31,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:24:31,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:24:31,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:24:31,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:24:31,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:24:31,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:24:31,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:24:31,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:24:31,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:24:31,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:24:31,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:24:31,242 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:24:31,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:24:31,243 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:24:31,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:24:31,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:24:31,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:24:31,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:24:31,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:24:31,244 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:24:31,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:24:31,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:24:31,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:24:31,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:24:31,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:24:31,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:24:31,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:24:31,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:24:31,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:24:31,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:24:31,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:24:31,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:24:31,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:24:31,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:24:31,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:24:31,248 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 -> 1770b13b2d376015ba74d62efd831f9c697d4bdd [2020-10-20 06:24:31,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:24:31,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:24:31,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:24:31,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:24:31,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:24:31,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.04.c [2020-10-20 06:24:31,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1254262/706dc4c2b5ae4223ab8b735e7b60fb2d/FLAGbb57615ba [2020-10-20 06:24:31,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:24:31,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.04.c [2020-10-20 06:24:32,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1254262/706dc4c2b5ae4223ab8b735e7b60fb2d/FLAGbb57615ba [2020-10-20 06:24:32,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1254262/706dc4c2b5ae4223ab8b735e7b60fb2d [2020-10-20 06:24:32,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:24:32,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:24:32,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:24:32,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:24:32,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:24:32,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f69a23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32, skipping insertion in model container [2020-10-20 06:24:32,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:24:32,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:24:32,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:24:32,713 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:24:32,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:24:32,748 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:24:32,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32 WrapperNode [2020-10-20 06:24:32,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:24:32,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:24:32,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:24:32,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:24:32,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:24:32,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:24:32,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:24:32,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:24:32,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (1/1) ... [2020-10-20 06:24:32,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:24:32,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:24:32,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:24:32,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:24:32,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (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 06:24:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:24:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:24:33,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:24:33,048 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:24:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:33 BoogieIcfgContainer [2020-10-20 06:24:33,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:24:33,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:24:33,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:24:33,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:24:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:24:32" (1/3) ... [2020-10-20 06:24:33,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c1026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:24:33, skipping insertion in model container [2020-10-20 06:24:33,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:32" (2/3) ... [2020-10-20 06:24:33,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c1026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:24:33, skipping insertion in model container [2020-10-20 06:24:33,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:33" (3/3) ... [2020-10-20 06:24:33,058 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.04.c [2020-10-20 06:24:33,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:24:33,078 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:24:33,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:24:33,116 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:24:33,117 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:24:33,117 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:24:33,117 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:24:33,117 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:24:33,117 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:24:33,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:24:33,118 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:24:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 06:24:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:24:33,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:24:33,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:24:33,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:24:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:24:33,143 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-20 06:24:33,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:24:33,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142981131] [2020-10-20 06:24:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:24:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:24:33,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:24:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:24:33,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:24:33,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:24:33,276 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:24:33,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:24:33,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:24:33 BoogieIcfgContainer [2020-10-20 06:24:33,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:24:33,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:24:33,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:24:33,295 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:24:33,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:33" (3/4) ... [2020-10-20 06:24:33,297 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:24:33,338 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:24:33,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:24:33,341 INFO L168 Benchmark]: Toolchain (without parser) took 983.69 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 15.8 MB in the beginning and 25.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,342 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 33.0 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 42.2 kB). Peak memory consumption was 42.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.75 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 14.9 MB in the beginning and 26.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 25.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,345 INFO L168 Benchmark]: Boogie Preprocessor took 24.35 ms. Allocated memory is still 43.5 MB. Free memory was 25.0 MB in the beginning and 23.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,346 INFO L168 Benchmark]: RCFGBuilder took 240.95 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 23.8 MB in the beginning and 25.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,347 INFO L168 Benchmark]: TraceAbstraction took 242.49 ms. Allocated memory is still 45.1 MB. Free memory was 25.1 MB in the beginning and 12.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,347 INFO L168 Benchmark]: Witness Printer took 44.06 ms. Allocated memory is still 45.1 MB. Free memory was 12.6 MB in the beginning and 25.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:24:33,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 33.0 MB. Free memory was 9.5 MB in the beginning and 9.4 MB in the end (delta: 42.2 kB). Peak memory consumption was 42.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 386.75 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 14.9 MB in the beginning and 26.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 25.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.35 ms. Allocated memory is still 43.5 MB. Free memory was 25.0 MB in the beginning and 23.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 240.95 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 23.8 MB in the beginning and 25.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 242.49 ms. Allocated memory is still 45.1 MB. Free memory was 25.1 MB in the beginning and 12.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Witness Printer took 44.06 ms. Allocated memory is still 45.1 MB. Free memory was 12.6 MB in the beginning and 25.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x < y [L27] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 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=14occurred 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...