./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/count_up_down-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/loops/count_up_down-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5465abd0acd0e19d367a95bacffc8ac4a6f2d65 .......................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:10:11,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:10:11,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:10:11,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:10:11,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:10:11,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:10:11,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:10:11,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:10:11,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:10:11,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:10:11,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:10:11,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:10:11,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:10:11,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:10:11,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:10:11,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:10:11,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:10:11,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:10:11,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:10:11,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:10:11,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:10:11,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:10:11,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:10:11,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:10:11,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:10:11,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:10:11,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:10:11,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:10:11,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:10:11,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:10:11,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:10:11,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:10:11,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:10:11,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:10:11,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:10:11,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:10:11,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:10:11,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:10:11,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:10:11,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:10:11,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:10:11,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:10:11,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:10:11,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:10:11,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:10:11,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:10:11,850 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:10:11,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:10:11,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:10:11,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:10:11,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:10:11,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:10:11,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:10:11,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:10:11,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:10:11,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:10:11,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:10:11,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:10:11,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:10:11,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:10:11,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:10:11,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:10:11,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:10:11,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:10:11,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:10:11,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:10:11,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:10:11,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:10:11,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:10:11,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:10:11,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:10:11,859 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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5465abd0acd0e19d367a95bacffc8ac4a6f2d65 [2020-07-28 18:10:12,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:10:12,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:10:12,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:10:12,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:10:12,223 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:10:12,224 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/count_up_down-2.c [2020-07-28 18:10:12,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87be6e506/2d4ef87ca12a499c8b6513f85bcfa0a5/FLAG652b66d5d [2020-07-28 18:10:12,723 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:10:12,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/count_up_down-2.c [2020-07-28 18:10:12,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87be6e506/2d4ef87ca12a499c8b6513f85bcfa0a5/FLAG652b66d5d [2020-07-28 18:10:13,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87be6e506/2d4ef87ca12a499c8b6513f85bcfa0a5 [2020-07-28 18:10:13,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:10:13,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:10:13,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:10:13,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:10:13,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:10:13,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc015a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13, skipping insertion in model container [2020-07-28 18:10:13,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:10:13,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:10:13,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:10:13,386 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:10:13,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:10:13,418 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:10:13,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13 WrapperNode [2020-07-28 18:10:13,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:10:13,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:10:13,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:10:13,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:10:13,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:10:13,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:10:13,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:10:13,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:10:13,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (1/1) ... [2020-07-28 18:10:13,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:10:13,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:10:13,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:10:13,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:10:13,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (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 [2020-07-28 18:10:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:10:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:10:13,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:10:13,858 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-28 18:10:13,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:10:13 BoogieIcfgContainer [2020-07-28 18:10:13,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:10:13,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:10:13,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:10:13,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:10:13,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:10:13" (1/3) ... [2020-07-28 18:10:13,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8461bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:10:13, skipping insertion in model container [2020-07-28 18:10:13,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:10:13" (2/3) ... [2020-07-28 18:10:13,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8461bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:10:13, skipping insertion in model container [2020-07-28 18:10:13,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:10:13" (3/3) ... [2020-07-28 18:10:13,870 INFO L109 eAbstractionObserver]: Analyzing ICFG count_up_down-2.c [2020-07-28 18:10:13,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:10:13,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:10:13,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:10:13,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:10:13,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:10:13,930 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:10:13,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:10:13,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:10:13,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:10:13,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:10:13,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:10:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 18:10:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 18:10:13,954 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:10:13,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 18:10:13,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:10:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:10:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2020-07-28 18:10:13,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:10:13,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877571153] [2020-07-28 18:10:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:10:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 18:10:14,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 18:10:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 18:10:14,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 18:10:14,120 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 18:10:14,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 18:10:14,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:10:14,144 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:10:14,144 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 18:10:14,144 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 18:10:14,144 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-28 18:10:14,145 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-28 18:10:14,145 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:10:14,145 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:10:14,145 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:10:14,145 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:10:14,146 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-28 18:10:14,146 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:10:14,146 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. [2020-07-28 18:10:14,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:10:14 BoogieIcfgContainer [2020-07-28 18:10:14,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:10:14,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:10:14,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:10:14,150 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:10:14,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:10:13" (3/4) ... [2020-07-28 18:10:14,153 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 18:10:14,197 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:10:14,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:10:14,201 INFO L168 Benchmark]: Toolchain (without parser) took 1027.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -105.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:10:14,202 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:10:14,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 940.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-28 18:10:14,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 940.1 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:10:14,205 INFO L168 Benchmark]: Boogie Preprocessor took 30.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:10:14,206 INFO L168 Benchmark]: RCFGBuilder took 311.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2020-07-28 18:10:14,207 INFO L168 Benchmark]: TraceAbstraction took 286.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:10:14,208 INFO L168 Benchmark]: Witness Printer took 48.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:10:14,212 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 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 244.46 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 940.1 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 99.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 940.1 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 311.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 286.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * Witness Printer took 48.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; [L15] COND FALSE !(x>0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...