./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test21-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/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 e96ea2b5694d083c4ab21538f2478ac793ab7d6e ............................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:56:03,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:56:03,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:56:03,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:56:03,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:56:03,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:56:03,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:56:03,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:56:03,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:56:03,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:56:03,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:56:03,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:56:03,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:56:03,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:56:03,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:56:03,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:56:03,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:56:03,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:56:03,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:56:03,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:56:03,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:56:03,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:56:03,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:56:03,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:56:03,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:56:03,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:56:03,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:56:03,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:56:03,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:56:03,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:56:03,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:56:03,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:56:03,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:56:03,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:56:03,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:56:03,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:56:03,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:56:03,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:56:03,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:56:03,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:56:03,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:56:03,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:56:03,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:56:03,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:56:03,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:56:03,734 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:56:03,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:56:03,735 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:56:03,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:56:03,735 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:56:03,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:56:03,735 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:56:03,736 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:56:03,736 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:56:03,736 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:56:03,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:56:03,736 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:56:03,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:56:03,737 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:56:03,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:56:03,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:56:03,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:56:03,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:56:03,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:56:03,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:56:03,738 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:56:03,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:56:03,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:56:03,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:56:03,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:56:03,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:56:03,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:56:03,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:56:03,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:56:03,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:56:03,740 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:56:03,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:56:03,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:56:03,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:56:03,741 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_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/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 -> e96ea2b5694d083c4ab21538f2478ac793ab7d6e [2019-11-26 02:56:03,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:56:03,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:56:03,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:56:03,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:56:03,892 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:56:03,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test21-1.c [2019-11-26 02:56:03,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/data/b3a8ec8cc/3c5448321db744979192f16fb9c6bbe0/FLAG255807a1c [2019-11-26 02:56:04,326 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:56:04,327 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/sv-benchmarks/c/ldv-regression/test21-1.c [2019-11-26 02:56:04,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/data/b3a8ec8cc/3c5448321db744979192f16fb9c6bbe0/FLAG255807a1c [2019-11-26 02:56:04,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/data/b3a8ec8cc/3c5448321db744979192f16fb9c6bbe0 [2019-11-26 02:56:04,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:56:04,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:56:04,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:56:04,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:56:04,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:56:04,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2632a810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04, skipping insertion in model container [2019-11-26 02:56:04,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:56:04,377 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:56:04,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:56:04,587 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:56:04,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:56:04,630 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:56:04,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04 WrapperNode [2019-11-26 02:56:04,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:56:04,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:56:04,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:56:04,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:56:04,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:56:04,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:56:04,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:56:04,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:56:04,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... [2019-11-26 02:56:04,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:56:04,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:56:04,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:56:04,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:56:04,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/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 [2019-11-26 02:56:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:56:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:56:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:56:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:56:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:56:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:56:05,277 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:56:05,277 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:56:05,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:56:05 BoogieIcfgContainer [2019-11-26 02:56:05,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:56:05,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:56:05,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:56:05,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:56:05,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:56:04" (1/3) ... [2019-11-26 02:56:05,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b297d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:56:05, skipping insertion in model container [2019-11-26 02:56:05,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:56:04" (2/3) ... [2019-11-26 02:56:05,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b297d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:56:05, skipping insertion in model container [2019-11-26 02:56:05,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:56:05" (3/3) ... [2019-11-26 02:56:05,284 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2019-11-26 02:56:05,293 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:56:05,299 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:56:05,308 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:56:05,328 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:56:05,328 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:56:05,328 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:56:05,328 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:56:05,329 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:56:05,329 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:56:05,329 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:56:05,329 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:56:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-26 02:56:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:56:05,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:56:05,351 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:56:05,351 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:56:05,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:56:05,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2576448, now seen corresponding path program 1 times [2019-11-26 02:56:05,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:56:05,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300182781] [2019-11-26 02:56:05,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:56:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:56:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:56:05,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300182781] [2019-11-26 02:56:05,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:56:05,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:56:05,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366733853] [2019-11-26 02:56:05,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:56:05,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:56:05,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:56:05,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:56:05,590 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-26 02:56:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:56:05,612 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-26 02:56:05,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:56:05,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:56:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:56:05,620 INFO L225 Difference]: With dead ends: 10 [2019-11-26 02:56:05,620 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:56:05,624 INFO L630 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 [2019-11-26 02:56:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:56:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:56:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:56:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:56:05,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-26 02:56:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:56:05,648 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:56:05,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:56:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:56:05,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:56:05,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:56:05,666 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:56:05,666 INFO L440 ceAbstractionStarter]: At program point L36(lines 31 44) the Hoare annotation is: false [2019-11-26 02:56:05,666 INFO L447 ceAbstractionStarter]: At program point L34(lines 34 38) the Hoare annotation is: true [2019-11-26 02:56:05,666 INFO L444 ceAbstractionStarter]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2019-11-26 02:56:05,666 INFO L447 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-26 02:56:05,667 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-11-26 02:56:05,667 INFO L447 ceAbstractionStarter]: At program point L43(lines 30 44) the Hoare annotation is: true [2019-11-26 02:56:05,667 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 37) no Hoare annotation was computed. [2019-11-26 02:56:05,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:56:05 BoogieIcfgContainer [2019-11-26 02:56:05,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:56:05,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:56:05,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:56:05,673 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:56:05,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:56:05" (3/4) ... [2019-11-26 02:56:05,675 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:56:05,684 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:56:05,684 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:56:05,685 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:56:05,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_adeb7a5f-9ffe-47c2-9cf4-9b43b843875e/bin/utaipan/witness.graphml [2019-11-26 02:56:05,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:56:05,729 INFO L168 Benchmark]: Toolchain (without parser) took 1379.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -75.3 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:05,730 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-11-26 02:56:05,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -152.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:05,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:56:05,731 INFO L168 Benchmark]: Boogie Preprocessor took 35.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:56:05,731 INFO L168 Benchmark]: RCFGBuilder took 570.24 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:05,732 INFO L168 Benchmark]: TraceAbstraction took 393.00 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:05,733 INFO L168 Benchmark]: Witness Printer took 55.10 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: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:56:05,735 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 281.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -152.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 570.24 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: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 393.00 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: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.10 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: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...