./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e441b408705ca8366624dd497de58641bec51a6 ............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:09:03,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:09:03,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:09:03,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:09:03,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:09:03,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:09:03,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:09:03,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:09:03,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:09:03,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:09:03,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:09:03,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:09:03,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:09:03,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:09:03,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:09:03,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:09:03,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:09:03,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:09:03,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:09:03,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:09:03,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:09:03,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:09:03,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:09:03,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:09:03,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:09:03,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:09:03,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:09:03,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:09:03,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:09:03,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:09:03,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:09:03,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:09:03,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:09:03,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:09:03,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:09:03,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:09:03,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:09:03,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:09:03,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:09:03,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:09:03,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:09:03,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:09:03,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:09:03,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:09:03,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:09:03,727 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:09:03,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:09:03,727 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:09:03,728 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:09:03,728 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:09:03,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:09:03,728 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:09:03,729 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:09:03,730 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:09:03,730 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:09:03,730 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:09:03,730 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:09:03,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:09:03,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:09:03,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:09:03,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:09:03,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:09:03,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:09:03,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:09:03,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:09:03,733 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:09:03,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:09:03,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:09:03,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:09:03,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:09:03,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:09:03,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:09:03,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:09:03,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:09:03,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:09:03,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:09:03,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:09:03,736 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:09:03,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:09:03,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:09:03,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:09:03,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:09:03,737 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e441b408705ca8366624dd497de58641bec51a6 [2020-11-22 13:09:04,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:09:04,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:09:04,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:09:04,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:09:04,089 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:09:04,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/../../sv-benchmarks/c/loops/sum01-2.i [2020-11-22 13:09:04,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/data/e01846b0a/9c1857115621430bb0841b10bdf73a88/FLAGe4c9ccf8e [2020-11-22 13:09:04,591 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:09:04,592 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/sv-benchmarks/c/loops/sum01-2.i [2020-11-22 13:09:04,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/data/e01846b0a/9c1857115621430bb0841b10bdf73a88/FLAGe4c9ccf8e [2020-11-22 13:09:05,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/data/e01846b0a/9c1857115621430bb0841b10bdf73a88 [2020-11-22 13:09:05,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:09:05,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:09:05,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:05,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:09:05,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:09:05,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d48c348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05, skipping insertion in model container [2020-11-22 13:09:05,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:09:05,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:09:05,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:05,243 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:09:05,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:09:05,290 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:09:05,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05 WrapperNode [2020-11-22 13:09:05,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:09:05,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:05,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:09:05,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:09:05,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:09:05,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:09:05,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:09:05,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:09:05,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... [2020-11-22 13:09:05,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:09:05,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:09:05,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:09:05,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:09:05,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/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 [2020-11-22 13:09:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:09:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:09:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:09:05,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:09:05,730 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:09:05,730 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:09:05,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:05 BoogieIcfgContainer [2020-11-22 13:09:05,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:09:05,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:09:05,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:09:05,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:09:05,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:09:05" (1/3) ... [2020-11-22 13:09:05,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d027bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:05, skipping insertion in model container [2020-11-22 13:09:05,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:05" (2/3) ... [2020-11-22 13:09:05,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d027bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:05, skipping insertion in model container [2020-11-22 13:09:05,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:05" (3/3) ... [2020-11-22 13:09:05,740 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-11-22 13:09:05,764 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:09:05,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:09:05,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:09:05,801 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:09:05,802 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:09:05,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:09:05,802 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:09:05,802 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:09:05,802 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:09:05,802 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:09:05,802 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:09:05,812 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-22 13:09:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:09:05,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:05,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:09:05,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2126495066, now seen corresponding path program 1 times [2020-11-22 13:09:05,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:05,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145210029] [2020-11-22 13:09:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:06,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145210029] [2020-11-22 13:09:06,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:09:06,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:09:06,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366304170] [2020-11-22 13:09:06,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:09:06,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:06,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:09:06,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:09:06,034 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-11-22 13:09:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:06,097 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-22 13:09:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:09:06,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:09:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:06,106 INFO L225 Difference]: With dead ends: 21 [2020-11-22 13:09:06,106 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:09:06,108 INFO L677 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 [2020-11-22 13:09:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:09:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:09:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:09:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:09:06,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:09:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:06,137 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:09:06,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:09:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:09:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:09:06,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:06,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:06,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:09:06,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:06,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1494198701, now seen corresponding path program 1 times [2020-11-22 13:09:06,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:06,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312594599] [2020-11-22 13:09:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:06,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312594599] [2020-11-22 13:09:06,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539098438] [2020-11-22 13:09:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/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 [2020-11-22 13:09:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:06,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:09:06,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:09:06,398 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:09:06,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:09:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:06,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:09:06,441 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:09:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:06,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2141797311] [2020-11-22 13:09:06,611 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:09:06,611 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:09:06,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:09:06,619 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:09:06,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:09:07,055 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:09:07,185 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-22 13:09:07,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:09:07,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:09:07,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-11-22 13:09:07,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572663330] [2020-11-22 13:09:07,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 13:09:07,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 13:09:07,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:09:07,523 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 11 states. [2020-11-22 13:09:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:07,725 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-22 13:09:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:09:07,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 7 [2020-11-22 13:09:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:07,727 INFO L225 Difference]: With dead ends: 17 [2020-11-22 13:09:07,727 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 13:09:07,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-11-22 13:09:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 13:09:07,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 13:09:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:09:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-22 13:09:07,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-11-22 13:09:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:07,736 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-22 13:09:07,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 13:09:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-22 13:09:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:09:07,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:09:07,740 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2020-11-22 13:09:07,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:09:07,957 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:09:07,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:09:07,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1987986918, now seen corresponding path program 2 times [2020-11-22 13:09:07,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:09:07,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300550447] [2020-11-22 13:09:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:09:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:09:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:09:08,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300550447] [2020-11-22 13:09:08,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292059217] [2020-11-22 13:09:08,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:09:08,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-22 13:09:08,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 13:09:08,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-22 13:09:08,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:09:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:08,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:09:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:09:08,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1504697670] [2020-11-22 13:09:08,497 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:09:08,498 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:09:08,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:09:08,498 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:09:08,498 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:09:08,718 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:09:08,869 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-22 13:09:09,015 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-11-22 13:09:09,270 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-11-22 13:09:09,272 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:09:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:09:09,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2020-11-22 13:09:09,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221044564] [2020-11-22 13:09:09,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-22 13:09:09,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:09:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-22 13:09:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-11-22 13:09:09,274 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 18 states. [2020-11-22 13:09:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:09:09,549 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-22 13:09:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:09:09,550 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 10 [2020-11-22 13:09:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:09:09,550 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:09:09,550 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:09:09,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-11-22 13:09:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:09:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:09:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:09:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:09:09,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-22 13:09:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:09:09,552 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:09:09,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-22 13:09:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:09:09,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:09:09,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-22 13:09:09,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:09:09,822 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:09:09,822 INFO L270 CegarLoopResult]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ ULTIMATE.start_main_~sn~0 2)) (.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< ULTIMATE.start_main_~sn~0 (+ (* 2 ULTIMATE.start_main_~n~0) 1)))) (and (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~sn~0 0))) [2020-11-22 13:09:09,822 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:09:09,822 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-22 13:09:09,822 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:09:09,823 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-22 13:09:09,823 INFO L270 CegarLoopResult]: At program point L16-2(lines 1 29) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~sn~0 0)) [2020-11-22 13:09:09,823 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 13:09:09,823 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 13:09:09,823 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 13:09:09,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:09:09 BoogieIcfgContainer [2020-11-22 13:09:09,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:09:09,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:09:09,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:09:09,839 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:09:09,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:05" (3/4) ... [2020-11-22 13:09:09,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:09:09,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 13:09:09,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:09:09,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:09:09,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:09:09,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1cb38ebd-a895-4c8a-8744-79a8ce1a38df/bin/utaipan/witness.graphml [2020-11-22 13:09:09,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:09:09,887 INFO L168 Benchmark]: Toolchain (without parser) took 4874.18 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 68.9 MB in the beginning and 67.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:09,888 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 74.8 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:09,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.54 ms. Allocated memory is still 102.8 MB. Free memory was 68.7 MB in the beginning and 79.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:09,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.46 ms. Allocated memory is still 102.8 MB. Free memory was 79.1 MB in the beginning and 77.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:09,889 INFO L168 Benchmark]: Boogie Preprocessor took 28.91 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 76.6 MB in the end (delta: 985.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:09:09,890 INFO L168 Benchmark]: RCFGBuilder took 373.70 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 62.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:09,891 INFO L168 Benchmark]: TraceAbstraction took 4104.14 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 62.4 MB in the beginning and 70.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:09,891 INFO L168 Benchmark]: Witness Printer took 47.72 ms. Allocated memory is still 148.9 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:09:09,894 INFO L339 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 102.8 MB. Free memory was 74.8 MB in the beginning and 74.8 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.54 ms. Allocated memory is still 102.8 MB. Free memory was 68.7 MB in the beginning and 79.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.46 ms. Allocated memory is still 102.8 MB. Free memory was 79.1 MB in the beginning and 77.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.91 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 76.6 MB in the end (delta: 985.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 373.70 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 62.9 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4104.14 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 62.4 MB in the beginning and 70.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Witness Printer took 47.72 ms. Allocated memory is still 148.9 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (i == 1 && sn == 0) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) || sn == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 30 SDslu, 36 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 38 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 3156 SizeOfPredicates, 12 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...