./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ncompf.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 0502d3c21f5f4ac16678747b32ea8813b3ead6ef ................................................................................................................................................................................................................................................................................................. 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 0.1.24-30f4e4a [2019-11-27 22:30:56,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 22:30:56,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 22:30:56,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 22:30:56,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 22:30:56,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 22:30:56,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 22:30:56,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 22:30:56,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 22:30:56,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 22:30:56,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 22:30:56,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 22:30:56,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 22:30:56,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 22:30:56,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 22:30:56,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 22:30:56,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 22:30:56,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 22:30:56,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 22:30:56,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 22:30:56,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 22:30:56,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 22:30:56,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 22:30:56,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 22:30:56,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 22:30:56,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 22:30:56,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 22:30:56,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 22:30:56,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 22:30:56,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 22:30:56,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 22:30:56,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 22:30:56,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 22:30:56,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 22:30:56,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 22:30:56,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 22:30:56,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 22:30:56,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 22:30:56,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 22:30:56,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 22:30:56,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 22:30:56,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 22:30:56,788 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 22:30:56,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 22:30:56,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 22:30:56,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 22:30:56,795 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 22:30:56,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 22:30:56,797 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 22:30:56,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 22:30:56,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 22:30:56,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 22:30:56,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 22:30:56,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 22:30:56,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 22:30:56,799 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 22:30:56,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 22:30:56,801 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 22:30:56,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 22:30:56,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 22:30:56,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 22:30:56,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 22:30:56,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 22:30:56,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:30:56,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 22:30:56,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 22:30:56,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 22:30:56,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 22:30:56,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 22:30:56,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 22:30:56,805 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 -> 0502d3c21f5f4ac16678747b32ea8813b3ead6ef [2019-11-27 22:30:57,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 22:30:57,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 22:30:57,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 22:30:57,115 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 22:30:57,116 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 22:30:57,117 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ncompf.c [2019-11-27 22:30:57,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f78f745c/c35dd662f54d4659b1f3aa2bcb26f0a8/FLAG986a704a2 [2019-11-27 22:30:57,660 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 22:30:57,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c [2019-11-27 22:30:57,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f78f745c/c35dd662f54d4659b1f3aa2bcb26f0a8/FLAG986a704a2 [2019-11-27 22:30:58,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f78f745c/c35dd662f54d4659b1f3aa2bcb26f0a8 [2019-11-27 22:30:58,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 22:30:58,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 22:30:58,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 22:30:58,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 22:30:58,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 22:30:58,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6bb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58, skipping insertion in model container [2019-11-27 22:30:58,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 22:30:58,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 22:30:58,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:30:58,307 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 22:30:58,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 22:30:58,354 INFO L208 MainTranslator]: Completed translation [2019-11-27 22:30:58,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58 WrapperNode [2019-11-27 22:30:58,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 22:30:58,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 22:30:58,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 22:30:58,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 22:30:58,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 22:30:58,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 22:30:58,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 22:30:58,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 22:30:58,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... [2019-11-27 22:30:58,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 22:30:58,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 22:30:58,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 22:30:58,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 22:30:58,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 22:30:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 22:30:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 22:30:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 22:30:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 22:30:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 22:30:58,943 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 22:30:58,944 INFO L297 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-27 22:30:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:58 BoogieIcfgContainer [2019-11-27 22:30:58,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 22:30:58,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 22:30:58,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 22:30:58,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 22:30:58,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 10:30:58" (1/3) ... [2019-11-27 22:30:58,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581f88be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:30:58, skipping insertion in model container [2019-11-27 22:30:58,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 10:30:58" (2/3) ... [2019-11-27 22:30:58,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581f88be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 10:30:58, skipping insertion in model container [2019-11-27 22:30:58,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:58" (3/3) ... [2019-11-27 22:30:58,962 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2019-11-27 22:30:58,970 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 22:30:58,978 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 22:30:58,990 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 22:30:59,015 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 22:30:59,015 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 22:30:59,016 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 22:30:59,016 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 22:30:59,016 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 22:30:59,016 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 22:30:59,016 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 22:30:59,017 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 22:30:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-27 22:30:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-27 22:30:59,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:59,040 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:59,040 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:59,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1553700779, now seen corresponding path program 1 times [2019-11-27 22:30:59,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:59,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726473702] [2019-11-27 22:30:59,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 22:30:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 22:30:59,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726473702] [2019-11-27 22:30:59,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 22:30:59,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 22:30:59,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881350377] [2019-11-27 22:30:59,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 22:30:59,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 22:30:59,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 22:30:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:30:59,229 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-27 22:30:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 22:30:59,245 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2019-11-27 22:30:59,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 22:30:59,247 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-27 22:30:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 22:30:59,257 INFO L225 Difference]: With dead ends: 39 [2019-11-27 22:30:59,257 INFO L226 Difference]: Without dead ends: 18 [2019-11-27 22:30:59,264 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 22:30:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-27 22:30:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-27 22:30:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 22:30:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-27 22:30:59,298 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-27 22:30:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 22:30:59,298 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-27 22:30:59,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 22:30:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-27 22:30:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-27 22:30:59,299 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 22:30:59,299 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 22:30:59,300 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 22:30:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 22:30:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1516529121, now seen corresponding path program 1 times [2019-11-27 22:30:59,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 22:30:59,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307408923] [2019-11-27 22:30:59,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 22:30:59,322 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 22:30:59,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011213551] [2019-11-27 22:30:59,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 22:30:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:30:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 22:30:59,445 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 22:30:59,446 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 22:30:59,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 22:30:59,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 10:30:59 BoogieIcfgContainer [2019-11-27 22:30:59,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 22:30:59,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 22:30:59,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 22:30:59,682 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 22:30:59,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 10:30:58" (3/4) ... [2019-11-27 22:30:59,685 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 22:30:59,751 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 22:30:59,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 22:30:59,755 INFO L168 Benchmark]: Toolchain (without parser) took 1700.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -89.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:59,755 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:30:59,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.05 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:59,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:59,758 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:30:59,759 INFO L168 Benchmark]: RCFGBuilder took 451.82 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:59,760 INFO L168 Benchmark]: TraceAbstraction took 734.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2019-11-27 22:30:59,760 INFO L168 Benchmark]: Witness Printer took 70.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 22:30:59,764 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.05 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 107.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 451.82 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 734.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L25] long long *c = malloc(sizeof(long long)*N); [L27] a[0] = 6 [L28] b[0] = 1 [L29] c[0] = 0 [L30] i=1 VAL [N=1] [L30] COND FALSE !(i