./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/array-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/array-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer --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 12bc5db9e359efdba093db73cc34fe7f7123f461 ...................................................................................................................................................................................................................................................................................................................... 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-cad4683 [2019-10-22 08:54:38,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:38,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:38,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:38,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:38,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:38,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:38,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:38,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:38,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:38,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:38,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:38,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:38,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:38,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:38,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:38,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:38,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:38,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:38,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:38,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:38,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:38,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:38,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:38,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:38,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:38,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:38,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:38,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:38,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:38,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:38,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:38,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:38,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:38,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:38,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:38,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:38,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:38,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:38,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:38,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:38,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:54:38,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:38,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:38,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:38,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:38,769 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:38,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:38,769 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:38,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:38,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:38,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:38,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:38,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:38,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:38,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:38,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:38,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:38,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:38,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:38,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:38,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:38,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:38,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:38,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:38,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:38,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:38,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:38,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:38,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:38,773 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer 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 -> 12bc5db9e359efdba093db73cc34fe7f7123f461 [2019-10-22 08:54:38,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:38,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:38,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:38,821 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:38,822 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:38,823 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/../../sv-benchmarks/c/loops/array-2.c [2019-10-22 08:54:38,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/data/d3425dd9e/88fe4ccf9e00406f8afb116fca3be48f/FLAGa6422ae5e [2019-10-22 08:54:39,236 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:39,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/sv-benchmarks/c/loops/array-2.c [2019-10-22 08:54:39,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/data/d3425dd9e/88fe4ccf9e00406f8afb116fca3be48f/FLAGa6422ae5e [2019-10-22 08:54:39,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/data/d3425dd9e/88fe4ccf9e00406f8afb116fca3be48f [2019-10-22 08:54:39,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:39,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:39,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:39,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:39,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:39,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f59373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39, skipping insertion in model container [2019-10-22 08:54:39,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,272 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:39,286 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:39,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:39,553 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:39,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:39,587 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:39,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39 WrapperNode [2019-10-22 08:54:39,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:39,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:39,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:39,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:39,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:39,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:39,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:39,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:39,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... [2019-10-22 08:54:39,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:39,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:39,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:39,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:39,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/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 [2019-10-22 08:54:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:54:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:54:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:54:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:54:39,913 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:39,913 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:54:39,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:39 BoogieIcfgContainer [2019-10-22 08:54:39,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:39,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:39,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:39,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:39,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:39" (1/3) ... [2019-10-22 08:54:39,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425f5ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:39, skipping insertion in model container [2019-10-22 08:54:39,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:39" (2/3) ... [2019-10-22 08:54:39,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425f5ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:39, skipping insertion in model container [2019-10-22 08:54:39,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:39" (3/3) ... [2019-10-22 08:54:39,921 INFO L109 eAbstractionObserver]: Analyzing ICFG array-2.c [2019-10-22 08:54:39,930 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:39,937 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:54:39,947 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:54:39,983 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:39,983 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:39,984 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:39,984 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:39,984 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:39,984 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:39,984 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:39,984 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-10-22 08:54:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:54:40,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:40,004 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:54:40,006 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:40,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:40,011 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2019-10-22 08:54:40,030 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:40,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473992705] [2019-10-22 08:54:40,035 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:40,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:40,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:40,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473992705] [2019-10-22 08:54:40,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:40,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:40,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796824549] [2019-10-22 08:54:40,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:54:40,157 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:40,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:54:40,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:54:40,170 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-10-22 08:54:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:40,186 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-10-22 08:54:40,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:54:40,187 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 08:54:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:40,197 INFO L225 Difference]: With dead ends: 21 [2019-10-22 08:54:40,197 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 08:54:40,201 INFO L600 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 [2019-10-22 08:54:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 08:54:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 08:54:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:54:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-10-22 08:54:40,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-10-22 08:54:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:40,228 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 08:54:40,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:54:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-10-22 08:54:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:54:40,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:40,228 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:54:40,229 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:40,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:40,229 INFO L82 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2019-10-22 08:54:40,229 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:40,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88313171] [2019-10-22 08:54:40,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:40,230 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:40,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:40,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88313171] [2019-10-22 08:54:40,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:40,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:40,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106570789] [2019-10-22 08:54:40,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:54:40,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:40,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:40,319 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-10-22 08:54:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:40,340 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-10-22 08:54:40,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:40,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 08:54:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:40,341 INFO L225 Difference]: With dead ends: 16 [2019-10-22 08:54:40,341 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 08:54:40,342 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 08:54:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-10-22 08:54:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:54:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 08:54:40,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-10-22 08:54:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:40,345 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 08:54:40,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:54:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 08:54:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:54:40,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:40,346 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:40,346 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2019-10-22 08:54:40,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:40,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045187102] [2019-10-22 08:54:40,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:40,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:40,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:40,431 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:40,432 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:54:40,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:40 BoogieIcfgContainer [2019-10-22 08:54:40,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:40,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:40,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:40,462 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:40,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:39" (3/4) ... [2019-10-22 08:54:40,465 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:54:40,517 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_430d3c34-135c-4d9f-a3f6-148d272e74ca/bin/uautomizer/witness.graphml [2019-10-22 08:54:40,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:40,520 INFO L168 Benchmark]: Toolchain (without parser) took 1263.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -139.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:40,521 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:40,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:40,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:40,525 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:40,527 INFO L168 Benchmark]: RCFGBuilder took 248.07 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:40,527 INFO L168 Benchmark]: TraceAbstraction took 545.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:40,528 INFO L168 Benchmark]: Witness Printer took 56.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:40,530 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.28 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. * Boogie Preprocessor took 34.44 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. * RCFGBuilder took 248.07 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 545.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 56.28 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 [L19] COND TRUE j