./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum_array-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf04eabdc5b4c50cc28558a524d03f68fbf75e54 .................................................................................................................................................................................................................................................................................................. 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-f470102 [2019-12-07 20:11:21,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:11:21,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:11:21,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:11:21,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:11:21,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:11:21,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:11:21,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:11:21,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:11:21,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:11:21,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:11:21,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:11:21,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:11:21,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:11:21,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:11:21,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:11:21,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:11:21,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:11:21,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:11:21,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:11:21,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:11:21,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:11:21,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:11:21,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:11:21,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:11:21,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:11:21,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:11:21,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:11:21,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:11:21,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:11:21,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:11:21,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:11:21,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:11:21,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:11:21,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:11:21,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:11:21,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:11:21,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:11:21,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:11:21,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:11:21,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:11:21,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:11:21,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:11:21,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:11:21,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:11:21,737 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:11:21,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:11:21,737 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:11:21,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:11:21,737 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:11:21,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:11:21,737 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:11:21,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:11:21,738 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:11:21,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:11:21,738 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:11:21,738 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:11:21,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:11:21,739 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:11:21,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:11:21,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:11:21,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:11:21,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:11:21,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:11:21,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:11:21,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:11:21,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:11:21,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:11:21,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:11:21,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:11:21,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:11:21,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:11:21,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:11:21,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:11:21,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:11:21,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:11:21,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan 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 -> Taipan 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 -> cf04eabdc5b4c50cc28558a524d03f68fbf75e54 [2019-12-07 20:11:21,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:11:21,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:11:21,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:11:21,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:11:21,862 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:11:21,862 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/../../sv-benchmarks/c/loops/sum_array-1.c [2019-12-07 20:11:21,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/data/535af2a06/859568e0ca0044929290d7aaec50229c/FLAG29285e183 [2019-12-07 20:11:22,308 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:11:22,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/sv-benchmarks/c/loops/sum_array-1.c [2019-12-07 20:11:22,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/data/535af2a06/859568e0ca0044929290d7aaec50229c/FLAG29285e183 [2019-12-07 20:11:22,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/data/535af2a06/859568e0ca0044929290d7aaec50229c [2019-12-07 20:11:22,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:11:22,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:11:22,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:11:22,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:11:22,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:11:22,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c417da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22, skipping insertion in model container [2019-12-07 20:11:22,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:11:22,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:11:22,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:11:22,483 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:11:22,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:11:22,515 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:11:22,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22 WrapperNode [2019-12-07 20:11:22,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:11:22,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:11:22,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:11:22,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:11:22,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:11:22,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:11:22,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:11:22,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:11:22,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... [2019-12-07 20:11:22,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:11:22,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:11:22,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:11:22,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:11:22,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/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 [2019-12-07 20:11:22,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:11:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:11:22,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:11:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 20:11:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:11:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:11:22,809 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:11:22,809 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 20:11:22,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:11:22 BoogieIcfgContainer [2019-12-07 20:11:22,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:11:22,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:11:22,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:11:22,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:11:22,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:11:22" (1/3) ... [2019-12-07 20:11:22,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747f448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:11:22, skipping insertion in model container [2019-12-07 20:11:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:11:22" (2/3) ... [2019-12-07 20:11:22,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747f448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:11:22, skipping insertion in model container [2019-12-07 20:11:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:11:22" (3/3) ... [2019-12-07 20:11:22,815 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2019-12-07 20:11:22,821 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:11:22,825 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:11:22,832 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:11:22,846 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:11:22,847 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:11:22,847 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:11:22,847 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:11:22,847 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:11:22,847 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:11:22,847 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:11:22,847 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:11:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-12-07 20:11:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 20:11:22,861 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:11:22,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:11:22,861 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:11:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:11:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash 211087215, now seen corresponding path program 1 times [2019-12-07 20:11:22,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:11:22,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624769303] [2019-12-07 20:11:22,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:11:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:11:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:11:23,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624769303] [2019-12-07 20:11:23,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:11:23,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:11:23,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446902888] [2019-12-07 20:11:23,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:11:23,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:11:23,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:11:23,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:11:23,030 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-12-07 20:11:23,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:11:23,101 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2019-12-07 20:11:23,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:11:23,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 20:11:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:11:23,109 INFO L225 Difference]: With dead ends: 30 [2019-12-07 20:11:23,109 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 20:11:23,112 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:11:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 20:11:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2019-12-07 20:11:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 20:11:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-12-07 20:11:23,135 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-12-07 20:11:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:11:23,136 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 20:11:23,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:11:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-12-07 20:11:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:11:23,136 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:11:23,136 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:11:23,136 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:11:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:11:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1420386376, now seen corresponding path program 1 times [2019-12-07 20:11:23,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:11:23,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524800305] [2019-12-07 20:11:23,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:11:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:11:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:11:23,287 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:11:23,288 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:11:23,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:11:23 BoogieIcfgContainer [2019-12-07 20:11:23,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:11:23,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:11:23,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:11:23,307 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:11:23,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:11:22" (3/4) ... [2019-12-07 20:11:23,309 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:11:23,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_19d8f34c-5f26-4ef1-9b47-26c971161939/bin/utaipan/witness.graphml [2019-12-07 20:11:23,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:11:23,342 INFO L168 Benchmark]: Toolchain (without parser) took 1017.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 946.8 MB in the beginning and 1.0 GB in the end (delta: -65.3 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,342 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 962.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:11:23,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.50 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: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,343 INFO L168 Benchmark]: Boogie Preprocessor took 17.38 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,344 INFO L168 Benchmark]: RCFGBuilder took 249.43 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,344 INFO L168 Benchmark]: TraceAbstraction took 495.57 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,344 INFO L168 Benchmark]: Witness Printer took 33.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:11:23,346 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 962.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 190.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.50 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: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.38 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 249.43 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 495.57 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. * Witness Printer took 33.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i