./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.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_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -s /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/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 aac67f6dc6529e5dab098a5e1960c3e19b78df96 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:53:50,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:53:50,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:53:50,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:53:50,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:53:50,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:53:50,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:53:50,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:53:50,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:53:50,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:53:50,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:53:50,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:53:50,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:53:50,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:53:50,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:53:50,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:53:50,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:53:50,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:53:50,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:53:50,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:53:50,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:53:50,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:53:50,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:53:50,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:53:50,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:53:50,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:53:50,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:53:50,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:53:50,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:53:50,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:53:50,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:53:50,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:53:50,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:53:50,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:53:50,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:53:50,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:53:50,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:53:50,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:53:50,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:53:50,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:53:50,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:53:50,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:53:50,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:53:50,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:53:50,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:53:50,370 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:53:50,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:53:50,370 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:53:50,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:53:50,370 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:53:50,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:53:50,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:53:50,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:53:50,372 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:53:50,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:53:50,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:53:50,372 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:53:50,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:53:50,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:53:50,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:53:50,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:53:50,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:53:50,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:53:50,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:53:50,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:53:50,374 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:53:50,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:53:50,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:53:50,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:53:50,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:53:50,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:53:50,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:53:50,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:53:50,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:53:50,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:53:50,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:53:50,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:53:50,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:53:50,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:53:50,377 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_06e79949-02ac-4267-bb60-86105d768b6e/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 -> aac67f6dc6529e5dab098a5e1960c3e19b78df96 [2019-11-26 02:53:50,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:53:50,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:53:50,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:53:50,580 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:53:50,581 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:53:50,581 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2019-11-26 02:53:50,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/data/81c920dd3/5d60f9389e81498e835e983f2e61927c/FLAG5c3b11dda [2019-11-26 02:53:51,181 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:53:51,184 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2019-11-26 02:53:51,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/data/81c920dd3/5d60f9389e81498e835e983f2e61927c/FLAG5c3b11dda [2019-11-26 02:53:51,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/data/81c920dd3/5d60f9389e81498e835e983f2e61927c [2019-11-26 02:53:51,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:53:51,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:53:51,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:53:51,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:53:51,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:53:51,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:53:51" (1/1) ... [2019-11-26 02:53:51,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551f2460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:51, skipping insertion in model container [2019-11-26 02:53:51,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:53:51" (1/1) ... [2019-11-26 02:53:51,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:53:51,542 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:53:51,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:53:51,957 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:53:52,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:53:52,076 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:53:52,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52 WrapperNode [2019-11-26 02:53:52,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:53:52,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:53:52,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:53:52,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:53:52,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:53:52,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:53:52,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:53:52,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:53:52,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... [2019-11-26 02:53:52,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:53:52,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:53:52,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:53:52,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:53:52,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/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 02:53:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:53:52,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:53:54,345 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:53:54,345 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:53:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:54 BoogieIcfgContainer [2019-11-26 02:53:54,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:53:54,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:53:54,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:53:54,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:53:54,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:53:51" (1/3) ... [2019-11-26 02:53:54,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653ea95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:53:54, skipping insertion in model container [2019-11-26 02:53:54,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:52" (2/3) ... [2019-11-26 02:53:54,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653ea95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:53:54, skipping insertion in model container [2019-11-26 02:53:54,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:54" (3/3) ... [2019-11-26 02:53:54,355 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2019-11-26 02:53:54,364 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:53:54,371 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:53:54,381 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:53:54,404 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:53:54,404 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:53:54,404 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:53:54,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:53:54,405 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:53:54,405 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:53:54,405 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:53:54,405 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:53:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2019-11-26 02:53:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-26 02:53:54,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:54,430 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:54,431 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1323232665, now seen corresponding path program 1 times [2019-11-26 02:53:54,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:54,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527816264] [2019-11-26 02:53:54,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:54,776 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 02:53:54,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527816264] [2019-11-26 02:53:54,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:54,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:53:54,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081862695] [2019-11-26 02:53:54,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:53:54,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:54,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:53:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:54,800 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2019-11-26 02:53:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:55,584 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2019-11-26 02:53:55,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:53:55,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-11-26 02:53:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:55,605 INFO L225 Difference]: With dead ends: 297 [2019-11-26 02:53:55,606 INFO L226 Difference]: Without dead ends: 216 [2019-11-26 02:53:55,610 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-11-26 02:53:55,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2019-11-26 02:53:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-11-26 02:53:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 372 transitions. [2019-11-26 02:53:55,660 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 372 transitions. Word has length 71 [2019-11-26 02:53:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:55,661 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 372 transitions. [2019-11-26 02:53:55,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:53:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 372 transitions. [2019-11-26 02:53:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-26 02:53:55,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:55,665 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:55,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2123289958, now seen corresponding path program 1 times [2019-11-26 02:53:55,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:55,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448221585] [2019-11-26 02:53:55,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:55,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448221585] [2019-11-26 02:53:55,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:55,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:53:55,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395545403] [2019-11-26 02:53:55,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:53:55,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:55,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:53:55,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:55,800 INFO L87 Difference]: Start difference. First operand 216 states and 372 transitions. Second operand 4 states. [2019-11-26 02:53:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:56,487 INFO L93 Difference]: Finished difference Result 786 states and 1358 transitions. [2019-11-26 02:53:56,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:53:56,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-11-26 02:53:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:56,494 INFO L225 Difference]: With dead ends: 786 [2019-11-26 02:53:56,494 INFO L226 Difference]: Without dead ends: 571 [2019-11-26 02:53:56,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-26 02:53:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2019-11-26 02:53:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-26 02:53:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 687 transitions. [2019-11-26 02:53:56,531 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 687 transitions. Word has length 78 [2019-11-26 02:53:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:56,532 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 687 transitions. [2019-11-26 02:53:56,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:53:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 687 transitions. [2019-11-26 02:53:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-26 02:53:56,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:56,537 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:56,537 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash -682705837, now seen corresponding path program 1 times [2019-11-26 02:53:56,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:56,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26305277] [2019-11-26 02:53:56,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-26 02:53:56,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26305277] [2019-11-26 02:53:56,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:56,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:53:56,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923830827] [2019-11-26 02:53:56,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:53:56,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:56,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:53:56,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:56,643 INFO L87 Difference]: Start difference. First operand 429 states and 687 transitions. Second operand 4 states. [2019-11-26 02:53:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:57,095 INFO L93 Difference]: Finished difference Result 928 states and 1480 transitions. [2019-11-26 02:53:57,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:53:57,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-26 02:53:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:57,098 INFO L225 Difference]: With dead ends: 928 [2019-11-26 02:53:57,099 INFO L226 Difference]: Without dead ends: 500 [2019-11-26 02:53:57,100 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-26 02:53:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2019-11-26 02:53:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-11-26 02:53:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 746 transitions. [2019-11-26 02:53:57,133 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 746 transitions. Word has length 89 [2019-11-26 02:53:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:57,133 INFO L462 AbstractCegarLoop]: Abstraction has 500 states and 746 transitions. [2019-11-26 02:53:57,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:53:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 746 transitions. [2019-11-26 02:53:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-26 02:53:57,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:57,138 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:57,138 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:57,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:57,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1637083016, now seen corresponding path program 1 times [2019-11-26 02:53:57,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:57,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114336076] [2019-11-26 02:53:57,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:53:57,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114336076] [2019-11-26 02:53:57,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:57,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:53:57,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980512005] [2019-11-26 02:53:57,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:53:57,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:57,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:53:57,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:53:57,200 INFO L87 Difference]: Start difference. First operand 500 states and 746 transitions. Second operand 3 states. [2019-11-26 02:53:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:57,590 INFO L93 Difference]: Finished difference Result 1354 states and 2045 transitions. [2019-11-26 02:53:57,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:53:57,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2019-11-26 02:53:57,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:57,595 INFO L225 Difference]: With dead ends: 1354 [2019-11-26 02:53:57,596 INFO L226 Difference]: Without dead ends: 784 [2019-11-26 02:53:57,597 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 02:53:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2019-11-26 02:53:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 713. [2019-11-26 02:53:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2019-11-26 02:53:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 918 transitions. [2019-11-26 02:53:57,636 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 918 transitions. Word has length 91 [2019-11-26 02:53:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:57,636 INFO L462 AbstractCegarLoop]: Abstraction has 713 states and 918 transitions. [2019-11-26 02:53:57,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:53:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 918 transitions. [2019-11-26 02:53:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-26 02:53:57,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:57,650 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:57,650 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2009841932, now seen corresponding path program 1 times [2019-11-26 02:53:57,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:57,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890037121] [2019-11-26 02:53:57,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-26 02:53:57,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890037121] [2019-11-26 02:53:57,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:57,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:53:57,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914118582] [2019-11-26 02:53:57,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:53:57,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:53:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:57,777 INFO L87 Difference]: Start difference. First operand 713 states and 918 transitions. Second operand 4 states. [2019-11-26 02:53:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:58,255 INFO L93 Difference]: Finished difference Result 1513 states and 1934 transitions. [2019-11-26 02:53:58,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:53:58,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-11-26 02:53:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:58,261 INFO L225 Difference]: With dead ends: 1513 [2019-11-26 02:53:58,261 INFO L226 Difference]: Without dead ends: 801 [2019-11-26 02:53:58,262 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:53:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2019-11-26 02:53:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 784. [2019-11-26 02:53:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-11-26 02:53:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 992 transitions. [2019-11-26 02:53:58,286 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 992 transitions. Word has length 99 [2019-11-26 02:53:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:58,287 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 992 transitions. [2019-11-26 02:53:58,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:53:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 992 transitions. [2019-11-26 02:53:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-26 02:53:58,289 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:58,289 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:58,290 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:58,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1788101444, now seen corresponding path program 1 times [2019-11-26 02:53:58,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:58,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179145141] [2019-11-26 02:53:58,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-26 02:53:58,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179145141] [2019-11-26 02:53:58,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:58,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:53:58,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660108026] [2019-11-26 02:53:58,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:53:58,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:58,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:53:58,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:58,361 INFO L87 Difference]: Start difference. First operand 784 states and 992 transitions. Second operand 4 states. [2019-11-26 02:53:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:58,845 INFO L93 Difference]: Finished difference Result 1567 states and 2002 transitions. [2019-11-26 02:53:58,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:53:58,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-11-26 02:53:58,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:58,851 INFO L225 Difference]: With dead ends: 1567 [2019-11-26 02:53:58,852 INFO L226 Difference]: Without dead ends: 855 [2019-11-26 02:53:58,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2019-11-26 02:53:58,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2019-11-26 02:53:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-11-26 02:53:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 982 transitions. [2019-11-26 02:53:58,881 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 982 transitions. Word has length 103 [2019-11-26 02:53:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:58,882 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 982 transitions. [2019-11-26 02:53:58,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:53:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 982 transitions. [2019-11-26 02:53:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-26 02:53:58,884 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:58,885 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:58,885 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:58,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1472782685, now seen corresponding path program 1 times [2019-11-26 02:53:58,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:58,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812762320] [2019-11-26 02:53:58,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:59,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812762320] [2019-11-26 02:53:59,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:59,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:53:59,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444663014] [2019-11-26 02:53:59,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:53:59,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:59,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:53:59,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:53:59,014 INFO L87 Difference]: Start difference. First operand 784 states and 982 transitions. Second operand 5 states. [2019-11-26 02:53:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:59,670 INFO L93 Difference]: Finished difference Result 2064 states and 2660 transitions. [2019-11-26 02:53:59,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:53:59,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-11-26 02:53:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:59,677 INFO L225 Difference]: With dead ends: 2064 [2019-11-26 02:53:59,678 INFO L226 Difference]: Without dead ends: 1352 [2019-11-26 02:53:59,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:53:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2019-11-26 02:53:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2019-11-26 02:53:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2019-11-26 02:53:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1379 transitions. [2019-11-26 02:53:59,709 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1379 transitions. Word has length 121 [2019-11-26 02:53:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:59,710 INFO L462 AbstractCegarLoop]: Abstraction has 1139 states and 1379 transitions. [2019-11-26 02:53:59,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:53:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1379 transitions. [2019-11-26 02:53:59,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-26 02:53:59,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:59,715 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:59,715 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:59,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1906082923, now seen corresponding path program 1 times [2019-11-26 02:53:59,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:59,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17994640] [2019-11-26 02:53:59,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 173 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-26 02:53:59,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17994640] [2019-11-26 02:53:59,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006304842] [2019-11-26 02:53:59,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/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 02:54:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:00,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:54:00,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:54:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2019-11-26 02:54:00,170 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:54:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2019-11-26 02:54:00,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:54:00,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2019-11-26 02:54:00,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3916997] [2019-11-26 02:54:00,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:54:00,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:00,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:54:00,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:54:00,271 INFO L87 Difference]: Start difference. First operand 1139 states and 1379 transitions. Second operand 3 states. [2019-11-26 02:54:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:00,575 INFO L93 Difference]: Finished difference Result 2275 states and 2775 transitions. [2019-11-26 02:54:00,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:54:00,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-11-26 02:54:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:00,576 INFO L225 Difference]: With dead ends: 2275 [2019-11-26 02:54:00,576 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:54:00,579 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:54:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:54:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:54:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:54:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:54:00,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2019-11-26 02:54:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:00,579 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:54:00,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:54:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:54:00,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:54:00,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:54:00,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L333(lines 333 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L102(lines 102 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L268(lines 268 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L136(lines 136 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L203(lines 203 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L72(lines 72 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L337(lines 337 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L238(lines 238 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L173(lines 173 390) no Hoare annotation was computed. [2019-11-26 02:54:00,957 INFO L444 ceAbstractionStarter]: For program point L140(lines 140 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L372(lines 372 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L306(lines 306 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L273(lines 273 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L108(lines 108 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L208(lines 208 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L144(lines 144 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L440 ceAbstractionStarter]: At program point L574(lines 30 575) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1)) (.cse1 (= ~a21~0 1))) (or (and .cse0 .cse1 (= 15 ~a8~0)) (= 13 ~a8~0) (and .cse0 .cse1 (= ~a20~0 1)) (<= ~a17~0 0))) [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L178(lines 178 390) no Hoare annotation was computed. [2019-11-26 02:54:00,958 INFO L444 ceAbstractionStarter]: For program point L377(lines 377 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L278(lines 278 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L245(lines 245 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L80(lines 80 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L345(lines 345 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L312(lines 312 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L114(lines 114 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L447 ceAbstractionStarter]: At program point L577(lines 577 594) the Hoare annotation is: true [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L214(lines 214 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L148(lines 148 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L49(lines 49 390) no Hoare annotation was computed. [2019-11-26 02:54:00,959 INFO L444 ceAbstractionStarter]: For program point L84(lines 84 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L382(lines 382 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L316(lines 316 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L250(lines 250 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L218(lines 218 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L152(lines 152 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L119(lines 119 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L318(lines 318 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L186(lines 186 390) no Hoare annotation was computed. [2019-11-26 02:54:00,960 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L440 ceAbstractionStarter]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1)) (.cse1 (= ~a21~0 1))) (or (and .cse0 .cse1 (= 15 ~a8~0)) (= 13 ~a8~0) (and .cse0 .cse1 (= ~a20~0 1)) (<= ~a17~0 0))) [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L286(lines 286 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L353(lines 353 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L189(lines 189 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L355(lines 355 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L256(lines 256 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L223(lines 223 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L124(lines 124 390) no Hoare annotation was computed. [2019-11-26 02:54:00,961 INFO L444 ceAbstractionStarter]: For program point L92(lines 92 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L588(line 588) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L324(lines 324 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L292(lines 292 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L160(lines 160 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L524(line 524) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L194(lines 194 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L62(lines 62 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L261(lines 261 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L129(lines 129 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L361(lines 361 390) no Hoare annotation was computed. [2019-11-26 02:54:00,962 INFO L444 ceAbstractionStarter]: For program point L97(lines 97 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L329(lines 329 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L197(lines 197 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L65(lines 65 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 524) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L363(lines 363 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L231(lines 231 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L165(lines 165 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L265(lines 265 390) no Hoare annotation was computed. [2019-11-26 02:54:00,963 INFO L444 ceAbstractionStarter]: For program point L365(lines 365 390) no Hoare annotation was computed. [2019-11-26 02:54:00,964 INFO L444 ceAbstractionStarter]: For program point L299(lines 299 390) no Hoare annotation was computed. [2019-11-26 02:54:00,964 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 390) no Hoare annotation was computed. [2019-11-26 02:54:00,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:00 BoogieIcfgContainer [2019-11-26 02:54:00,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:00,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:00,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:00,981 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:00,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:54" (3/4) ... [2019-11-26 02:54:00,985 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:54:01,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 100 nodes and edges [2019-11-26 02:54:01,006 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-11-26 02:54:01,008 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:54:01,010 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:54:01,186 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_06e79949-02ac-4267-bb60-86105d768b6e/bin/utaipan/witness.graphml [2019-11-26 02:54:01,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:01,189 INFO L168 Benchmark]: Toolchain (without parser) took 9715.71 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 331.9 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -254.3 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:01,189 INFO L168 Benchmark]: CDTParser took 0.21 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 02:54:01,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:01,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.43 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:01,191 INFO L168 Benchmark]: Boogie Preprocessor took 80.92 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:01,191 INFO L168 Benchmark]: RCFGBuilder took 2108.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.3 MB in the end (delta: 215.4 MB). Peak memory consumption was 215.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:01,192 INFO L168 Benchmark]: TraceAbstraction took 6632.50 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.9 MB). Free memory was 887.3 MB in the beginning and 1.2 GB in the end (delta: -334.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:01,192 INFO L168 Benchmark]: Witness Printer took 206.11 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:01,195 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 604.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.43 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.92 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2108.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.3 MB in the end (delta: 215.4 MB). Peak memory consumption was 215.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6632.50 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.9 MB). Free memory was 887.3 MB in the beginning and 1.2 GB in the end (delta: -334.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 206.11 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 524]: 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: 30]: Loop Invariant Derived loop invariant: ((((a17 == 1 && a21 == 1) && 15 == a8) || 13 == a8) || ((a17 == 1 && a21 == 1) && a20 == 1)) || a17 <= 0 - InvariantResult [Line: 577]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: ((((a17 == 1 && a21 == 1) && 15 == a8) || 13 == a8) || ((a17 == 1 && a21 == 1) && a20 == 1)) || a17 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Result: SAFE, OverallTime: 6.5s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 344 SDtfs, 848 SDslu, 64 SDs, 0 SdLazy, 2573 SolverSat, 571 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 380 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 514 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 42 NumberOfFragments, 55 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1473 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1026 NumberOfCodeBlocks, 1026 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1203 ConstructedInterpolants, 0 QuantifiedInterpolants, 367036 SizeOfPredicates, 1 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 895/922 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...