./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/joey.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 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-lit/joey.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 6360f720317c1229a4bb277806239106bfb4e5c0 ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-906a4fb [2020-10-19 18:32:57,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:32:57,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:32:57,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:32:57,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:32:57,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:32:57,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:32:57,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:32:57,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:32:57,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:32:57,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:32:57,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:32:57,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:32:57,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:32:57,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:32:57,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:32:57,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:32:57,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:32:57,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:32:57,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:32:57,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:32:57,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:32:57,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:32:57,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:32:57,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:32:57,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:32:57,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:32:57,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:32:57,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:32:57,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:32:57,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:32:57,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:32:57,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:32:57,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:32:57,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:32:57,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:32:57,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:32:57,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:32:57,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:32:57,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:32:57,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:32:57,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:32:57,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:32:57,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:32:57,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:32:57,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:32:57,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:32:57,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:32:57,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:32:57,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:32:57,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:32:57,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:32:57,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:32:57,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:32:57,937 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:32:57,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:32:57,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:32:57,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:32:57,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:32:57,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:32:57,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:32:57,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:32:57,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:32:57,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:32:57,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:32:57,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:32:57,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:32:57,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:32:57,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:32:57,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:32:57,941 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 -> 6360f720317c1229a4bb277806239106bfb4e5c0 [2020-10-19 18:32:58,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:32:58,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:32:58,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:32:58,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:32:58,295 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:32:58,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/joey.c [2020-10-19 18:32:58,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d05407cb/ae2c091c55c445db856d940162b04f3a/FLAG4e2f41eab [2020-10-19 18:32:58,784 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:32:58,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/joey.c [2020-10-19 18:32:58,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d05407cb/ae2c091c55c445db856d940162b04f3a/FLAG4e2f41eab [2020-10-19 18:32:59,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d05407cb/ae2c091c55c445db856d940162b04f3a [2020-10-19 18:32:59,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:32:59,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:32:59,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:59,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:32:59,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:32:59,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4a525e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59, skipping insertion in model container [2020-10-19 18:32:59,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:32:59,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:32:59,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:59,472 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:32:59,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:59,500 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:32:59,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59 WrapperNode [2020-10-19 18:32:59,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:59,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:59,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:32:59,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:32:59,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:59,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:32:59,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:32:59,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:32:59,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (1/1) ... [2020-10-19 18:32:59,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:32:59,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:32:59,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:32:59,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:32:59,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (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 [2020-10-19 18:32:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-10-19 18:32:59,670 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-10-19 18:32:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:32:59,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:32:59,880 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:32:59,880 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:32:59,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:59 BoogieIcfgContainer [2020-10-19 18:32:59,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:32:59,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:32:59,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:32:59,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:32:59,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:32:59" (1/3) ... [2020-10-19 18:32:59,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b794aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:59, skipping insertion in model container [2020-10-19 18:32:59,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:59" (2/3) ... [2020-10-19 18:32:59,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b794aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:59, skipping insertion in model container [2020-10-19 18:32:59,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:59" (3/3) ... [2020-10-19 18:32:59,891 INFO L111 eAbstractionObserver]: Analyzing ICFG joey.c [2020-10-19 18:32:59,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:32:59,911 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-19 18:32:59,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-19 18:32:59,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:32:59,964 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:32:59,964 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:32:59,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:32:59,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:32:59,965 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:32:59,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:32:59,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:32:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-19 18:32:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:33:00,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:00,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:33:00,001 INFO L429 AbstractCegarLoop]: === Iteration 1 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2020-10-19 18:33:00,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:00,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000774401] [2020-10-19 18:33:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:00,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000774401] [2020-10-19 18:33:00,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:00,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:33:00,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032867428] [2020-10-19 18:33:00,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:33:00,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:00,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:33:00,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:33:00,294 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2020-10-19 18:33:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:00,486 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-10-19 18:33:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:33:00,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-10-19 18:33:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:00,500 INFO L225 Difference]: With dead ends: 66 [2020-10-19 18:33:00,500 INFO L226 Difference]: Without dead ends: 52 [2020-10-19 18:33:00,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:33:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-19 18:33:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-19 18:33:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:33:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-19 18:33:00,558 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 6 [2020-10-19 18:33:00,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:00,559 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-19 18:33:00,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:33:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-19 18:33:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:33:00,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:00,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:33:00,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:33:00,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:00,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2020-10-19 18:33:00,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:00,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870362590] [2020-10-19 18:33:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:33:00,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:33:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:33:00,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:33:00,604 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:33:00,605 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:33:00,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:33:00,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:33:00 BoogieIcfgContainer [2020-10-19 18:33:00,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:33:00,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:33:00,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:33:00,630 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:33:00,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:59" (3/4) ... [2020-10-19 18:33:00,633 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:33:00,668 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:33:00,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:33:00,671 INFO L168 Benchmark]: Toolchain (without parser) took 1463.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -110.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,671 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:33:00,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.09 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 946.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,674 INFO L168 Benchmark]: Boogie Preprocessor took 18.47 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,675 INFO L168 Benchmark]: RCFGBuilder took 279.34 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,675 INFO L168 Benchmark]: TraceAbstraction took 745.63 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,676 INFO L168 Benchmark]: Witness Printer took 39.15 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:00,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.09 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 946.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 82.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.47 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 279.34 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 745.63 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: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.15 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 45 SDslu, 71 SDs, 0 SdLazy, 68 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...