./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30f4e4ab 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/Toulouse-BranchesToLoop-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 46206f7a86b26e5772618ef155399955c07418b5 .................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 02:50:28,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:50:28,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:50:28,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:50:28,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:50:28,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:50:28,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:50:28,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:50:28,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:50:28,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:50:28,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:50:28,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:50:28,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:50:28,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:50:28,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:50:28,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:50:28,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:50:28,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:50:28,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:50:28,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:50:28,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:50:28,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:50:28,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:50:28,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:50:28,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:50:28,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:50:28,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:50:28,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:50:28,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:50:28,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:50:28,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:50:28,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:50:28,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:50:28,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:50:28,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:50:28,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:50:28,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:50:28,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:50:28,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:50:28,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:50:28,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:50:28,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:50:28,972 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:50:28,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:50:28,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:50:28,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:50:28,975 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:50:28,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:50:28,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:50:28,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:50:28,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:50:28,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:50:28,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:50:28,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:50:28,977 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:50:28,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:50:28,978 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:50:28,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:50:28,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:50:28,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:50:28,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:50:28,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:50:28,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:50:28,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:50:28,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:50:28,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:50:28,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:50:28,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:50:28,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:50:28,982 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 -> 46206f7a86b26e5772618ef155399955c07418b5 [2019-11-28 02:50:29,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:50:29,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:50:29,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:50:29,294 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:50:29,294 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:50:29,295 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2019-11-28 02:50:29,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d4f8c29d/55bed7a282f44e6c9e3bd1a8b3ad778f/FLAG9bc33abfc [2019-11-28 02:50:29,716 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:50:29,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2019-11-28 02:50:29,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d4f8c29d/55bed7a282f44e6c9e3bd1a8b3ad778f/FLAG9bc33abfc [2019-11-28 02:50:30,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d4f8c29d/55bed7a282f44e6c9e3bd1a8b3ad778f [2019-11-28 02:50:30,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:50:30,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:50:30,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:50:30,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:50:30,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:50:30,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222b6cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30, skipping insertion in model container [2019-11-28 02:50:30,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:50:30,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:50:30,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:50:30,350 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:50:30,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:50:30,390 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:50:30,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30 WrapperNode [2019-11-28 02:50:30,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:50:30,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:50:30,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:50:30,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:50:30,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:50:30,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:50:30,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:50:30,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:50:30,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (1/1) ... [2019-11-28 02:50:30,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:50:30,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:50:30,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:50:30,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:50:30,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (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 02:50:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:50:30,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:50:30,756 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:50:30,757 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:50:30,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:30 BoogieIcfgContainer [2019-11-28 02:50:30,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:50:30,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:50:30,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:50:30,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:50:30,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:50:30" (1/3) ... [2019-11-28 02:50:30,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f8df3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:50:30, skipping insertion in model container [2019-11-28 02:50:30,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:30" (2/3) ... [2019-11-28 02:50:30,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f8df3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:50:30, skipping insertion in model container [2019-11-28 02:50:30,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:30" (3/3) ... [2019-11-28 02:50:30,767 INFO L109 eAbstractionObserver]: Analyzing ICFG Toulouse-BranchesToLoop-1.c [2019-11-28 02:50:30,777 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:50:30,785 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:50:30,799 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:50:30,826 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:50:30,826 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:50:30,826 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:50:30,826 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:50:30,827 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:50:30,827 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:50:30,827 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:50:30,827 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:50:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 02:50:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:50:30,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:30,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:50:30,861 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:30,870 INFO L82 PathProgramCache]: Analyzing trace with hash 957637, now seen corresponding path program 1 times [2019-11-28 02:50:30,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:30,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902614433] [2019-11-28 02:50:30,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:31,081 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 02:50:31,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902614433] [2019-11-28 02:50:31,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:50:31,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:50:31,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537155598] [2019-11-28 02:50:31,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:50:31,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:50:31,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:50:31,105 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-28 02:50:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:31,235 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-28 02:50:31,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:50:31,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 02:50:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:31,251 INFO L225 Difference]: With dead ends: 19 [2019-11-28 02:50:31,251 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 02:50:31,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:50:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 02:50:31,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 02:50:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 02:50:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-28 02:50:31,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2019-11-28 02:50:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:31,308 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-28 02:50:31,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:50:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-28 02:50:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:50:31,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:31,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:50:31,309 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash 29686796, now seen corresponding path program 1 times [2019-11-28 02:50:31,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:31,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695035695] [2019-11-28 02:50:31,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:31,359 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 02:50:31,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695035695] [2019-11-28 02:50:31,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:50:31,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:50:31,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129041192] [2019-11-28 02:50:31,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:50:31,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:31,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:50:31,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:50:31,365 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-28 02:50:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:31,425 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-11-28 02:50:31,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:50:31,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 02:50:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:31,426 INFO L225 Difference]: With dead ends: 14 [2019-11-28 02:50:31,427 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 02:50:31,428 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:50:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 02:50:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-28 02:50:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 02:50:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-28 02:50:31,431 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2019-11-28 02:50:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:31,432 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-28 02:50:31,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:50:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-28 02:50:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:50:31,433 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:31,433 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:50:31,434 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash 29746378, now seen corresponding path program 1 times [2019-11-28 02:50:31,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:31,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779711233] [2019-11-28 02:50:31,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:50:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:50:31,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:50:31,468 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:50:31,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:50:31 BoogieIcfgContainer [2019-11-28 02:50:31,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:50:31,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:50:31,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:50:31,486 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:50:31,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:30" (3/4) ... [2019-11-28 02:50:31,489 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:50:31,531 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:50:31,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:50:31,534 INFO L168 Benchmark]: Toolchain (without parser) took 1434.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -133.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:31,534 INFO L168 Benchmark]: CDTParser took 1.33 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 02:50:31,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.40 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 02:50:31,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.28 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:50:31,537 INFO L168 Benchmark]: Boogie Preprocessor took 82.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:31,538 INFO L168 Benchmark]: RCFGBuilder took 241.68 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:31,538 INFO L168 Benchmark]: TraceAbstraction took 725.83 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: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:31,539 INFO L168 Benchmark]: Witness Printer took 46.11 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 02:50:31,547 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33 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 292.40 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 40.28 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -189.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.68 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: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 725.83 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: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. * Witness Printer took 46.11 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: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x; [L15] int y; [L16] int z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND FALSE !(__VERIFIER_nondet_int() != 0) [L22] x = -1 [L24] COND TRUE y<100 && z<100 [L25] y+x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 24 SDslu, 3 SDs, 0 SdLazy, 31 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...