./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/Copenhagen_disj-1.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 66086dde0b191c29902f344504ecd9e9745e5c48 .............................................................................................................................................................................................................................................................. 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-f470102 [2019-11-28 20:22:26,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:22:26,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:22:26,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:22:26,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:22:26,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:22:26,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:22:26,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:22:26,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:22:26,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:22:26,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:22:26,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:22:26,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:22:26,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:22:26,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:22:26,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:22:26,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:22:26,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:22:26,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:22:26,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:22:26,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:22:26,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:22:26,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:22:26,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:22:26,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:22:26,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:22:26,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:22:26,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:22:26,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:22:26,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:22:26,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:22:26,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:22:26,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:22:26,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:22:26,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:22:26,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:22:26,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:22:26,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:22:26,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:22:26,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:22:26,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:22:26,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:22:26,143 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:22:26,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:22:26,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:22:26,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:22:26,149 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:22:26,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:22:26,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:22:26,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:22:26,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:22:26,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:22:26,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:22:26,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:22:26,151 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:22:26,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:22:26,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:22:26,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:22:26,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:22:26,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:22:26,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:22:26,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:22:26,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:22:26,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:22:26,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:22:26,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:22:26,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:22:26,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:22:26,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:22:26,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:22:26,156 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 -> 66086dde0b191c29902f344504ecd9e9745e5c48 [2019-11-28 20:22:26,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:22:26,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:22:26,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:22:26,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:22:26,496 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:22:26,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2019-11-28 20:22:26,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b38ff957/b45001014c974899a529c8856c97b1b7/FLAGa7a7e0989 [2019-11-28 20:22:27,059 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:22:27,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Copenhagen_disj-1.c [2019-11-28 20:22:27,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b38ff957/b45001014c974899a529c8856c97b1b7/FLAGa7a7e0989 [2019-11-28 20:22:27,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b38ff957/b45001014c974899a529c8856c97b1b7 [2019-11-28 20:22:27,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:22:27,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:22:27,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:22:27,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:22:27,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:22:27,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fe78cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27, skipping insertion in model container [2019-11-28 20:22:27,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:22:27,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:22:27,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:22:27,688 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:22:27,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:22:27,723 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:22:27,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27 WrapperNode [2019-11-28 20:22:27,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:22:27,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:22:27,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:22:27,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:22:27,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:22:27,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:22:27,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:22:27,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:22:27,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (1/1) ... [2019-11-28 20:22:27,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:22:27,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:22:27,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:22:27,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:22:27,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (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 [2019-11-28 20:22:27,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:22:27,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:22:28,051 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:22:28,051 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:22:28,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:28 BoogieIcfgContainer [2019-11-28 20:22:28,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:22:28,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:22:28,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:22:28,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:22:28,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:22:27" (1/3) ... [2019-11-28 20:22:28,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337101a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:28, skipping insertion in model container [2019-11-28 20:22:28,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:27" (2/3) ... [2019-11-28 20:22:28,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337101a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:28, skipping insertion in model container [2019-11-28 20:22:28,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:28" (3/3) ... [2019-11-28 20:22:28,061 INFO L109 eAbstractionObserver]: Analyzing ICFG Copenhagen_disj-1.c [2019-11-28 20:22:28,069 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:22:28,074 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:22:28,084 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:22:28,109 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:22:28,109 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:22:28,110 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:22:28,110 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:22:28,110 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:22:28,110 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:22:28,111 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:22:28,111 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:22:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 20:22:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 20:22:28,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:28,131 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 20:22:28,131 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:28,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-28 20:22:28,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:28,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309016120] [2019-11-28 20:22:28,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:28,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309016120] [2019-11-28 20:22:28,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:28,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:28,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506784052] [2019-11-28 20:22:28,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:28,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:28,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:28,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:28,354 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-28 20:22:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:28,429 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-28 20:22:28,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:28,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-28 20:22:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:28,440 INFO L225 Difference]: With dead ends: 26 [2019-11-28 20:22:28,440 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 20:22:28,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 20:22:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-11-28 20:22:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:22:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 20:22:28,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-28 20:22:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:28,477 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 20:22:28,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 20:22:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:22:28,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:28,478 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:22:28,479 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-28 20:22:28,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:28,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580761123] [2019-11-28 20:22:28,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:22:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:22:28,514 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:22:28,515 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:22:28,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:22:28 BoogieIcfgContainer [2019-11-28 20:22:28,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:22:28,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:22:28,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:22:28,536 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:22:28,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:28" (3/4) ... [2019-11-28 20:22:28,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:22:28,581 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:22:28,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:22:28,585 INFO L168 Benchmark]: Toolchain (without parser) took 1155.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -137.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:22:28,586 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:22:28,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.33 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:28,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:28,589 INFO L168 Benchmark]: Boogie Preprocessor took 19.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:22:28,589 INFO L168 Benchmark]: RCFGBuilder took 215.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:28,590 INFO L168 Benchmark]: TraceAbstraction took 481.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:22:28,591 INFO L168 Benchmark]: Witness Printer took 46.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:22:28,596 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.33 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 215.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 481.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. * Witness Printer took 46.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x, y, oldx; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE x >= 0 || y >= 0 [L17] oldx = x [L18] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 5 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...