./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/LeikeHeizmann-TACAS2014-Ex8.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 46300f8df490eeff7b37ea09f59b148489ff7bcb ...................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-29 01:23:46,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:23:46,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:23:46,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:23:46,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:23:46,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:23:46,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:23:46,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:23:46,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:23:46,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:23:46,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:23:46,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:23:46,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:23:46,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:23:46,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:23:46,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:23:46,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:23:46,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:23:46,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:23:46,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:23:46,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:23:46,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:23:46,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:23:46,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:23:46,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:23:46,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:23:46,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:23:46,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:23:46,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:23:46,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:23:46,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:23:46,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:23:46,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:23:46,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:23:46,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:23:46,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:23:46,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:23:46,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:23:46,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:23:46,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:23:46,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:23:46,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:23:47,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:23:47,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:23:47,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:23:47,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:23:47,012 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:23:47,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:23:47,012 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:23:47,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:23:47,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:23:47,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:23:47,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:23:47,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:23:47,014 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:23:47,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:23:47,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:23:47,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:23:47,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:23:47,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:23:47,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:23:47,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:23:47,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:23:47,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:23:47,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:23:47,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:23:47,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:23:47,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:23:47,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:23:47,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:23:47,017 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 -> 46300f8df490eeff7b37ea09f59b148489ff7bcb [2020-07-29 01:23:47,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:23:47,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:23:47,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:23:47,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:23:47,353 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:23:47,354 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c [2020-07-29 01:23:47,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5579573d0/abf819ad4d13460da135bb8c5359ed42/FLAG3769984b9 [2020-07-29 01:23:47,883 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:23:47,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c [2020-07-29 01:23:47,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5579573d0/abf819ad4d13460da135bb8c5359ed42/FLAG3769984b9 [2020-07-29 01:23:48,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5579573d0/abf819ad4d13460da135bb8c5359ed42 [2020-07-29 01:23:48,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:23:48,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:23:48,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:23:48,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:23:48,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:23:48,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531c53f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48, skipping insertion in model container [2020-07-29 01:23:48,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:23:48,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:23:48,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:23:48,562 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:23:48,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:23:48,605 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:23:48,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48 WrapperNode [2020-07-29 01:23:48,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:23:48,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:23:48,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:23:48,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:23:48,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:23:48,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:23:48,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:23:48,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:23:48,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (1/1) ... [2020-07-29 01:23:48,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:23:48,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:23:48,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:23:48,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:23:48,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (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 [2020-07-29 01:23:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:23:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:23:49,024 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:23:49,025 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-29 01:23:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:49 BoogieIcfgContainer [2020-07-29 01:23:49,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:23:49,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:23:49,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:23:49,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:23:49,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:23:48" (1/3) ... [2020-07-29 01:23:49,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef31bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:23:49, skipping insertion in model container [2020-07-29 01:23:49,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:23:48" (2/3) ... [2020-07-29 01:23:49,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef31bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:23:49, skipping insertion in model container [2020-07-29 01:23:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:49" (3/3) ... [2020-07-29 01:23:49,038 INFO L109 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex8.c [2020-07-29 01:23:49,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:23:49,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-29 01:23:49,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-29 01:23:49,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:23:49,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:23:49,114 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:23:49,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:23:49,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:23:49,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:23:49,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:23:49,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:23:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-07-29 01:23:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-29 01:23:49,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:23:49,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-29 01:23:49,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:23:49,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:23:49,167 INFO L82 PathProgramCache]: Analyzing trace with hash 963403, now seen corresponding path program 1 times [2020-07-29 01:23:49,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:23:49,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701297504] [2020-07-29 01:23:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:23:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:23:49,411 INFO L280 TraceCheckUtils]: 0: Hoare triple {18#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~q~0, main_~y~0;havoc main_~q~0;havoc main_~y~0;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; {18#true} is VALID [2020-07-29 01:23:49,412 INFO L280 TraceCheckUtils]: 1: Hoare triple {18#true} assume !!(main_~q~0 > 0); {18#true} is VALID [2020-07-29 01:23:49,414 INFO L280 TraceCheckUtils]: 2: Hoare triple {18#true} assume !(main_~y~0 > 0); {20#(<= ULTIMATE.start_main_~y~0 0)} is VALID [2020-07-29 01:23:49,415 INFO L280 TraceCheckUtils]: 3: Hoare triple {20#(<= ULTIMATE.start_main_~y~0 0)} assume !(main_~y~0 - 1 <= 2147483647); {19#false} is VALID [2020-07-29 01:23:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:23:49,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701297504] [2020-07-29 01:23:49,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:23:49,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:23:49,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080586497] [2020-07-29 01:23:49,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-29 01:23:49,429 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:23:49,433 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:23:49,447 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:23:49,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-29 01:23:49,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:23:49,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:23:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:23:49,461 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-07-29 01:23:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:49,630 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-07-29 01:23:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:23:49,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-07-29 01:23:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:23:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:23:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-07-29 01:23:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:23:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-07-29 01:23:49,654 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 41 transitions. [2020-07-29 01:23:49,763 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:23:49,777 INFO L225 Difference]: With dead ends: 34 [2020-07-29 01:23:49,777 INFO L226 Difference]: Without dead ends: 12 [2020-07-29 01:23:49,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:23:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-29 01:23:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-29 01:23:49,820 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:23:49,820 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-29 01:23:49,821 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-29 01:23:49,821 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-29 01:23:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:49,824 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-07-29 01:23:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-29 01:23:49,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:23:49,825 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:23:49,826 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-29 01:23:49,827 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-29 01:23:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:23:49,829 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-07-29 01:23:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-29 01:23:49,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:23:49,831 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:23:49,832 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:23:49,832 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:23:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-29 01:23:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-29 01:23:49,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2020-07-29 01:23:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:23:49,840 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-29 01:23:49,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-29 01:23:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-29 01:23:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:23:49,841 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:23:49,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:23:49,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:23:49,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:23:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:23:49,843 INFO L82 PathProgramCache]: Analyzing trace with hash 29865542, now seen corresponding path program 1 times [2020-07-29 01:23:49,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:23:49,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597223771] [2020-07-29 01:23:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:23:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:23:49,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:23:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:23:49,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:23:49,906 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:23:49,906 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:23:49,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:23:49,930 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-29 01:23:49,931 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-29 01:23:49,931 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-29 01:23:49,931 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-29 01:23:49,932 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-29 01:23:49,933 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-29 01:23:49,933 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-29 01:23:49,933 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-29 01:23:49,933 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-29 01:23:49,933 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-29 01:23:49,934 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-29 01:23:49,934 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-29 01:23:49,934 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-29 01:23:49,935 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-29 01:23:49,935 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-29 01:23:49,935 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-29 01:23:49,935 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-29 01:23:49,935 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-29 01:23:49,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:23:49 BoogieIcfgContainer [2020-07-29 01:23:49,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:23:49,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:23:49,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:23:49,944 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:23:49,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:23:49" (3/4) ... [2020-07-29 01:23:49,949 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 01:23:49,998 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:23:49,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:23:50,002 INFO L168 Benchmark]: Toolchain (without parser) took 1717.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -97.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:50,003 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:23:50,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.55 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:50,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:50,006 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:50,007 INFO L168 Benchmark]: RCFGBuilder took 305.02 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:50,008 INFO L168 Benchmark]: TraceAbstraction took 910.38 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:23:50,009 INFO L168 Benchmark]: Witness Printer took 55.88 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. [2020-07-29 01:23:50,018 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.55 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 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 92.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.70 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 305.02 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: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 910.38 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.88 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int q, y; [L15] q = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE q > 0 [L18] COND FALSE !(y > 0) [L22] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 5 SDs, 0 SdLazy, 5 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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...