./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1a.cil.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_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1a.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/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 d8f19e5f85495da246f7b055515ad1966fa98828 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:17:17,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:17:17,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:17:17,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:17:17,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:17:17,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:17:17,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:17:17,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:17:17,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:17:17,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:17:17,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:17:17,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:17:17,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:17:17,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:17:17,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:17:17,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:17:17,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:17:17,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:17:17,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:17:17,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:17:17,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:17:17,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:17:17,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:17:17,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:17:18,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:17:18,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:17:18,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:17:18,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:17:18,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:17:18,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:17:18,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:17:18,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:17:18,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:17:18,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:17:18,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:17:18,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:17:18,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:17:18,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:17:18,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:17:18,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:17:18,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:17:18,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:17:18,034 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:17:18,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:17:18,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:17:18,035 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:17:18,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:17:18,035 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:17:18,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:17:18,035 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:17:18,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:17:18,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:17:18,036 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:17:18,036 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:17:18,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:17:18,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:17:18,036 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:17:18,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:17:18,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:17:18,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:17:18,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:17:18,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:17:18,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:17:18,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:17:18,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:17:18,038 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:17:18,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:17:18,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:17:18,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:17:18,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:17:18,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:17:18,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:17:18,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:17:18,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:17:18,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:17:18,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:17:18,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:17:18,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:17:18,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:17:18,041 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_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/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 -> d8f19e5f85495da246f7b055515ad1966fa98828 [2019-11-26 02:17:18,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:17:18,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:17:18,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:17:18,232 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:17:18,232 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:17:18,233 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/../../sv-benchmarks/c/ssh-simplified/s3_srvr_1a.cil.c [2019-11-26 02:17:18,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/data/2e43af528/eec3cd7339f34584aee23d7a44f48e56/FLAGd51916150 [2019-11-26 02:17:18,662 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:17:18,663 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/sv-benchmarks/c/ssh-simplified/s3_srvr_1a.cil.c [2019-11-26 02:17:18,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/data/2e43af528/eec3cd7339f34584aee23d7a44f48e56/FLAGd51916150 [2019-11-26 02:17:18,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/data/2e43af528/eec3cd7339f34584aee23d7a44f48e56 [2019-11-26 02:17:18,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:17:18,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:17:18,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:17:18,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:17:18,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:17:18,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:17:18" (1/1) ... [2019-11-26 02:17:18,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165360b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:18, skipping insertion in model container [2019-11-26 02:17:18,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:17:18" (1/1) ... [2019-11-26 02:17:18,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:17:18,730 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:17:19,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:17:19,050 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:17:19,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:17:19,104 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:17:19,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19 WrapperNode [2019-11-26 02:17:19,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:17:19,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:17:19,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:17:19,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:17:19,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:17:19,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:17:19,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:17:19,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:17:19,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... [2019-11-26 02:17:19,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:17:19,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:17:19,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:17:19,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:17:19,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/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 02:17:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:17:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:17:19,729 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:17:19,729 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:17:19,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:19 BoogieIcfgContainer [2019-11-26 02:17:19,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:17:19,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:17:19,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:17:19,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:17:19,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:17:18" (1/3) ... [2019-11-26 02:17:19,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76891a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:17:19, skipping insertion in model container [2019-11-26 02:17:19,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:19" (2/3) ... [2019-11-26 02:17:19,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76891a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:17:19, skipping insertion in model container [2019-11-26 02:17:19,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:19" (3/3) ... [2019-11-26 02:17:19,736 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2019-11-26 02:17:19,743 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:17:19,748 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:17:19,758 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:17:19,780 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:17:19,780 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:17:19,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:17:19,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:17:19,781 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:17:19,781 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:17:19,781 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:17:19,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:17:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-26 02:17:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:17:19,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:19,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:17:19,801 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:19,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:19,806 INFO L82 PathProgramCache]: Analyzing trace with hash 963516, now seen corresponding path program 1 times [2019-11-26 02:17:19,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:19,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954698696] [2019-11-26 02:17:19,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:19,914 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 02:17:19,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954698696] [2019-11-26 02:17:19,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:17:19,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:17:19,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609356854] [2019-11-26 02:17:19,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:19,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:19,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:19,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:17:19,931 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2019-11-26 02:17:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:20,020 INFO L93 Difference]: Finished difference Result 86 states and 152 transitions. [2019-11-26 02:17:20,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:20,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:17:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:20,033 INFO L225 Difference]: With dead ends: 86 [2019-11-26 02:17:20,033 INFO L226 Difference]: Without dead ends: 51 [2019-11-26 02:17:20,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:17:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-26 02:17:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-26 02:17:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-26 02:17:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2019-11-26 02:17:20,070 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 4 [2019-11-26 02:17:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:20,071 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2019-11-26 02:17:20,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2019-11-26 02:17:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:17:20,071 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:20,072 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-26 02:17:20,072 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1358093686, now seen corresponding path program 1 times [2019-11-26 02:17:20,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:20,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471226300] [2019-11-26 02:17:20,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:20,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471226300] [2019-11-26 02:17:20,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756096692] [2019-11-26 02:17:20,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/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 [2019-11-26 02:17:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:20,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:17:20,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:20,160 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:20,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:17:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:17:20,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:17:20,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 5 [2019-11-26 02:17:20,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29004449] [2019-11-26 02:17:20,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:20,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:20,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:20,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:17:20,189 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand 3 states. [2019-11-26 02:17:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:20,249 INFO L93 Difference]: Finished difference Result 125 states and 212 transitions. [2019-11-26 02:17:20,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:20,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-26 02:17:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:20,251 INFO L225 Difference]: With dead ends: 125 [2019-11-26 02:17:20,251 INFO L226 Difference]: Without dead ends: 99 [2019-11-26 02:17:20,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:17:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-26 02:17:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2019-11-26 02:17:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-26 02:17:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 165 transitions. [2019-11-26 02:17:20,270 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 165 transitions. Word has length 7 [2019-11-26 02:17:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:20,271 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 165 transitions. [2019-11-26 02:17:20,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:20,271 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 165 transitions. [2019-11-26 02:17:20,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 02:17:20,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:20,274 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:20,477 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:20,477 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash -50673671, now seen corresponding path program 1 times [2019-11-26 02:17:20,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:20,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111868559] [2019-11-26 02:17:20,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:17:20,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111868559] [2019-11-26 02:17:20,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:17:20,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:17:20,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228367114] [2019-11-26 02:17:20,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:20,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:20,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:17:20,521 INFO L87 Difference]: Start difference. First operand 99 states and 165 transitions. Second operand 3 states. [2019-11-26 02:17:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:20,586 INFO L93 Difference]: Finished difference Result 152 states and 253 transitions. [2019-11-26 02:17:20,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:20,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-26 02:17:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:20,587 INFO L225 Difference]: With dead ends: 152 [2019-11-26 02:17:20,587 INFO L226 Difference]: Without dead ends: 54 [2019-11-26 02:17:20,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:17:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-26 02:17:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-26 02:17:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-26 02:17:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 88 transitions. [2019-11-26 02:17:20,596 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 88 transitions. Word has length 20 [2019-11-26 02:17:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:20,597 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 88 transitions. [2019-11-26 02:17:20,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2019-11-26 02:17:20,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 02:17:20,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:20,598 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:20,598 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:20,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:20,599 INFO L82 PathProgramCache]: Analyzing trace with hash -752735073, now seen corresponding path program 2 times [2019-11-26 02:17:20,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:20,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977061570] [2019-11-26 02:17:20,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:20,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977061570] [2019-11-26 02:17:20,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:17:20,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:17:20,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070116793] [2019-11-26 02:17:20,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:20,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:20,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:17:20,637 INFO L87 Difference]: Start difference. First operand 54 states and 88 transitions. Second operand 3 states. [2019-11-26 02:17:20,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:20,719 INFO L93 Difference]: Finished difference Result 114 states and 186 transitions. [2019-11-26 02:17:20,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:20,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-26 02:17:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:20,721 INFO L225 Difference]: With dead ends: 114 [2019-11-26 02:17:20,721 INFO L226 Difference]: Without dead ends: 64 [2019-11-26 02:17:20,721 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 02:17:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-26 02:17:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-11-26 02:17:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-26 02:17:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 97 transitions. [2019-11-26 02:17:20,730 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 97 transitions. Word has length 20 [2019-11-26 02:17:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:20,732 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 97 transitions. [2019-11-26 02:17:20,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 97 transitions. [2019-11-26 02:17:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-26 02:17:20,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:20,733 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:20,733 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:20,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1143523049, now seen corresponding path program 1 times [2019-11-26 02:17:20,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:20,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070487879] [2019-11-26 02:17:20,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:17:20,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070487879] [2019-11-26 02:17:20,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:17:20,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:17:20,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246393966] [2019-11-26 02:17:20,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:20,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:20,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:20,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:17:20,801 INFO L87 Difference]: Start difference. First operand 62 states and 97 transitions. Second operand 3 states. [2019-11-26 02:17:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:20,893 INFO L93 Difference]: Finished difference Result 108 states and 173 transitions. [2019-11-26 02:17:20,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:20,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-26 02:17:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:20,894 INFO L225 Difference]: With dead ends: 108 [2019-11-26 02:17:20,894 INFO L226 Difference]: Without dead ends: 78 [2019-11-26 02:17:20,895 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 02:17:20,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-26 02:17:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2019-11-26 02:17:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-26 02:17:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2019-11-26 02:17:20,905 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 24 [2019-11-26 02:17:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:20,905 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2019-11-26 02:17:20,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2019-11-26 02:17:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-26 02:17:20,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:20,907 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:20,907 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2083326824, now seen corresponding path program 1 times [2019-11-26 02:17:20,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:20,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995613794] [2019-11-26 02:17:20,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:20,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995613794] [2019-11-26 02:17:20,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147841099] [2019-11-26 02:17:20,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/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 [2019-11-26 02:17:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:21,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:17:21,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:21,061 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:21,072 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:17:21,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:17:21,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:17:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:21,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:17:21,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 7 [2019-11-26 02:17:21,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541385257] [2019-11-26 02:17:21,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:21,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:21,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:21,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:17:21,108 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand 3 states. [2019-11-26 02:17:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:21,142 INFO L93 Difference]: Finished difference Result 120 states and 173 transitions. [2019-11-26 02:17:21,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:21,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-11-26 02:17:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:21,144 INFO L225 Difference]: With dead ends: 120 [2019-11-26 02:17:21,144 INFO L226 Difference]: Without dead ends: 118 [2019-11-26 02:17:21,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:17:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-11-26 02:17:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2019-11-26 02:17:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-26 02:17:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2019-11-26 02:17:21,162 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 38 [2019-11-26 02:17:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:21,162 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2019-11-26 02:17:21,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2019-11-26 02:17:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:17:21,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:21,164 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:21,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:21,367 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash 620476285, now seen corresponding path program 1 times [2019-11-26 02:17:21,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:21,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254554729] [2019-11-26 02:17:21,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:21,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254554729] [2019-11-26 02:17:21,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053112589] [2019-11-26 02:17:21,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:21,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:17:21,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:21,507 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:21,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:17:21,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2019-11-26 02:17:21,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984810228] [2019-11-26 02:17:21,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:17:21,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:21,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:17:21,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:17:21,522 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand 4 states. [2019-11-26 02:17:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:21,644 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2019-11-26 02:17:21,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:17:21,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2019-11-26 02:17:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:21,646 INFO L225 Difference]: With dead ends: 236 [2019-11-26 02:17:21,646 INFO L226 Difference]: Without dead ends: 124 [2019-11-26 02:17:21,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:17:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-11-26 02:17:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2019-11-26 02:17:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-26 02:17:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2019-11-26 02:17:21,672 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 40 [2019-11-26 02:17:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:21,674 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2019-11-26 02:17:21,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:17:21,674 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2019-11-26 02:17:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-26 02:17:21,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:21,681 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:21,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:21,884 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:21,884 INFO L82 PathProgramCache]: Analyzing trace with hash 737503484, now seen corresponding path program 1 times [2019-11-26 02:17:21,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:21,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172806353] [2019-11-26 02:17:21,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:17:21,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172806353] [2019-11-26 02:17:21,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362997200] [2019-11-26 02:17:21,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:22,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:17:22,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:22,037 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:22,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:17:22,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2019-11-26 02:17:22,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463582107] [2019-11-26 02:17:22,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:22,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:22,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:22,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:17:22,046 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand 3 states. [2019-11-26 02:17:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:22,120 INFO L93 Difference]: Finished difference Result 230 states and 263 transitions. [2019-11-26 02:17:22,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:22,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-11-26 02:17:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:22,122 INFO L225 Difference]: With dead ends: 230 [2019-11-26 02:17:22,122 INFO L226 Difference]: Without dead ends: 148 [2019-11-26 02:17:22,123 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:17:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-26 02:17:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-11-26 02:17:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-26 02:17:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2019-11-26 02:17:22,138 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 54 [2019-11-26 02:17:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:22,138 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2019-11-26 02:17:22,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2019-11-26 02:17:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-26 02:17:22,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:22,140 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:22,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:22,349 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:17:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -709739287, now seen corresponding path program 1 times [2019-11-26 02:17:22,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:17:22,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813047203] [2019-11-26 02:17:22,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:17:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 66 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-26 02:17:22,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813047203] [2019-11-26 02:17:22,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245221433] [2019-11-26 02:17:22,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:22,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:17:22,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:22,487 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-26 02:17:22,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:17:22,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2019-11-26 02:17:22,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278339421] [2019-11-26 02:17:22,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:22,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:17:22,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:22,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:17:22,495 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand 3 states. [2019-11-26 02:17:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:22,508 INFO L93 Difference]: Finished difference Result 235 states and 260 transitions. [2019-11-26 02:17:22,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:22,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-26 02:17:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:22,509 INFO L225 Difference]: With dead ends: 235 [2019-11-26 02:17:22,509 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:17:22,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:17:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:17:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:17:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:17:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:17:22,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-11-26 02:17:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:22,511 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:17:22,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:17:22,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:17:22,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:17:22,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:17:23,127 INFO L440 ceAbstractionStarter]: At program point L60(lines 60 189) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,128 INFO L444 ceAbstractionStarter]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2019-11-26 02:17:23,128 INFO L440 ceAbstractionStarter]: At program point L52(lines 52 193) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,128 INFO L440 ceAbstractionStarter]: At program point L176(lines 22 211) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,128 INFO L444 ceAbstractionStarter]: For program point L44(lines 44 197) no Hoare annotation was computed. [2019-11-26 02:17:23,128 INFO L440 ceAbstractionStarter]: At program point L36(lines 36 201) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,128 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:17:23,128 INFO L440 ceAbstractionStarter]: At program point L45(lines 44 197) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0)) [2019-11-26 02:17:23,128 INFO L444 ceAbstractionStarter]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2019-11-26 02:17:23,128 INFO L440 ceAbstractionStarter]: At program point L29(lines 29 204) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,129 INFO L440 ceAbstractionStarter]: At program point L120(lines 113 122) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0)) [2019-11-26 02:17:23,129 INFO L440 ceAbstractionStarter]: At program point L112(lines 105 123) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 2) (< 8512 ULTIMATE.start_main_~s__state~0)) [2019-11-26 02:17:23,129 INFO L444 ceAbstractionStarter]: For program point L105(lines 105 123) no Hoare annotation was computed. [2019-11-26 02:17:23,129 INFO L444 ceAbstractionStarter]: For program point L72(lines 72 183) no Hoare annotation was computed. [2019-11-26 02:17:23,129 INFO L440 ceAbstractionStarter]: At program point L64(lines 64 187) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,129 INFO L440 ceAbstractionStarter]: At program point L56(lines 56 191) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,129 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-26 02:17:23,129 INFO L447 ceAbstractionStarter]: At program point L213(lines 8 217) the Hoare annotation is: true [2019-11-26 02:17:23,129 INFO L444 ceAbstractionStarter]: For program point L114(lines 114 118) no Hoare annotation was computed. [2019-11-26 02:17:23,129 INFO L440 ceAbstractionStarter]: At program point L48(lines 48 195) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,130 INFO L444 ceAbstractionStarter]: For program point L172(lines 172 174) no Hoare annotation was computed. [2019-11-26 02:17:23,130 INFO L444 ceAbstractionStarter]: For program point L106(lines 106 110) no Hoare annotation was computed. [2019-11-26 02:17:23,130 INFO L440 ceAbstractionStarter]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) [2019-11-26 02:17:23,130 INFO L440 ceAbstractionStarter]: At program point L40(lines 40 199) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,130 INFO L440 ceAbstractionStarter]: At program point L32(lines 32 203) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-11-26 02:17:23,130 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2019-11-26 02:17:23,130 INFO L440 ceAbstractionStarter]: At program point L173(lines 8 217) the Hoare annotation is: false [2019-11-26 02:17:23,130 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:17:23,130 INFO L447 ceAbstractionStarter]: At program point L216(lines 8 217) the Hoare annotation is: true [2019-11-26 02:17:23,130 INFO L440 ceAbstractionStarter]: At program point L68(lines 68 185) the Hoare annotation is: (or (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) (<= ULTIMATE.start_main_~blastFlag~0 2)) [2019-11-26 02:17:23,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:17:23 BoogieIcfgContainer [2019-11-26 02:17:23,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:17:23,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:17:23,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:17:23,148 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:17:23,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:19" (3/4) ... [2019-11-26 02:17:23,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:17:23,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-26 02:17:23,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:17:23,232 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7a14fe50-1f76-4f76-a81d-2b6f1e0b43b7/bin/utaipan/witness.graphml [2019-11-26 02:17:23,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:17:23,234 INFO L168 Benchmark]: Toolchain (without parser) took 4550.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -87.9 MB). Peak memory consumption was 61.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:23,235 INFO L168 Benchmark]: CDTParser took 0.22 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 02:17:23,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:23,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:17:23,236 INFO L168 Benchmark]: Boogie Preprocessor took 44.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:23,236 INFO L168 Benchmark]: RCFGBuilder took 534.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:23,237 INFO L168 Benchmark]: TraceAbstraction took 3416.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:23,237 INFO L168 Benchmark]: Witness Printer took 84.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:23,239 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 420.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 534.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3416.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.8 MB). Peak memory consumption was 63.8 MB. Max. memory is 11.5 GB. * Witness Printer took 84.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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: 48]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 && 8512 < s__state - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 8672 <= s__state && blastFlag < 5 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: blastFlag <= 2 && 8512 < s__state - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: blastFlag <= 2 && 8512 < s__state - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((8672 <= s__state && blastFlag < 5) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (8672 <= s__state && blastFlag < 5) || blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 398 SDtfs, 157 SDslu, 202 SDs, 0 SdLazy, 284 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 400 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 107 NumberOfFragments, 232 HoareAnnotationTreeSize, 18 FomulaSimplifications, 768 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 480 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 59139 SizeOfPredicates, 3 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 605/759 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...