./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0610fb40496b0ecade3a5ec9ba274ec558241ab5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:35:55,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:35:55,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:35:55,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:35:55,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:35:55,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:35:55,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:35:55,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:35:55,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:35:55,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:35:55,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:35:55,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:35:55,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:35:55,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:35:55,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:35:55,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:35:55,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:35:55,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:35:55,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:35:55,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:35:55,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:35:55,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:35:56,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:35:56,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:35:56,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:35:56,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:35:56,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:35:56,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:35:56,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:35:56,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:35:56,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:35:56,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:35:56,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:35:56,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:35:56,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:35:56,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:35:56,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:35:56,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:35:56,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:35:56,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:35:56,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:35:56,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:35:56,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:35:56,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:35:56,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:35:56,086 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:35:56,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:35:56,087 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:35:56,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:35:56,087 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:35:56,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:35:56,087 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:35:56,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:35:56,089 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:35:56,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:35:56,090 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:35:56,090 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:35:56,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:35:56,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:35:56,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:35:56,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:35:56,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:35:56,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:35:56,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:35:56,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:35:56,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:35:56,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:35:56,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:35:56,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:35:56,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:35:56,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:35:56,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:35:56,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:35:56,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:35:56,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:35:56,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:35:56,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:35:56,095 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:35:56,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:35:56,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:35:56,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:35:56,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:35:56,096 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0610fb40496b0ecade3a5ec9ba274ec558241ab5 [2020-11-28 07:35:56,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:35:56,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:35:56,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:35:56,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:35:56,453 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:35:56,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label06.c [2020-11-28 07:35:56,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/data/8c0b75e81/ddbb3f6a5f574984aebce9d9590261dd/FLAGb1e2492d2 [2020-11-28 07:35:57,151 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:35:57,151 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/sv-benchmarks/c/eca-rers2012/Problem01_label06.c [2020-11-28 07:35:57,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/data/8c0b75e81/ddbb3f6a5f574984aebce9d9590261dd/FLAGb1e2492d2 [2020-11-28 07:35:57,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/data/8c0b75e81/ddbb3f6a5f574984aebce9d9590261dd [2020-11-28 07:35:57,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:35:57,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:35:57,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:57,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:35:57,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:35:57,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:57" (1/1) ... [2020-11-28 07:35:57,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299abb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:57, skipping insertion in model container [2020-11-28 07:35:57,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:57" (1/1) ... [2020-11-28 07:35:57,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:35:57,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:35:57,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:57,948 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:35:58,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:58,065 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:35:58,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58 WrapperNode [2020-11-28 07:35:58,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:58,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:58,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:35:58,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:35:58,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:58,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:35:58,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:35:58,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:35:58,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... [2020-11-28 07:35:58,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:35:58,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:35:58,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:35:58,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:35:58,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:35:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:35:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:35:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:35:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:36:00,541 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:36:00,541 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:36:00,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:00 BoogieIcfgContainer [2020-11-28 07:36:00,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:36:00,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:36:00,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:36:00,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:36:00,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:35:57" (1/3) ... [2020-11-28 07:36:00,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f4496d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:00, skipping insertion in model container [2020-11-28 07:36:00,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:58" (2/3) ... [2020-11-28 07:36:00,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f4496d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:00, skipping insertion in model container [2020-11-28 07:36:00,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:00" (3/3) ... [2020-11-28 07:36:00,557 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-11-28 07:36:00,568 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:36:00,572 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:36:00,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:36:00,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:36:00,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:36:00,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:36:00,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:36:00,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:36:00,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:36:00,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:36:00,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:36:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:36:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:36:00,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:00,655 INFO L422 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] [2020-11-28 07:36:00,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:00,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1520713581, now seen corresponding path program 1 times [2020-11-28 07:36:00,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:00,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377818783] [2020-11-28 07:36:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:01,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377818783] [2020-11-28 07:36:01,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:01,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:01,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758842300] [2020-11-28 07:36:01,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:01,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:01,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:01,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:01,024 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:36:01,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:01,597 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:36:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:01,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:36:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:01,617 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:36:01,617 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:36:01,623 INFO L677 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 [2020-11-28 07:36:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:36:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:36:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:36:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2020-11-28 07:36:01,700 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2020-11-28 07:36:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:01,702 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2020-11-28 07:36:01,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:01,703 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2020-11-28 07:36:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-28 07:36:01,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:01,709 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-11-28 07:36:01,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:36:01,709 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1531538777, now seen corresponding path program 1 times [2020-11-28 07:36:01,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:01,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739960771] [2020-11-28 07:36:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:36:01,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739960771] [2020-11-28 07:36:01,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:01,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:01,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064397095] [2020-11-28 07:36:01,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:01,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:01,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:01,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:01,923 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2020-11-28 07:36:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:02,439 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2020-11-28 07:36:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:02,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-11-28 07:36:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:02,443 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:36:02,443 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:36:02,444 INFO L677 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 [2020-11-28 07:36:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:36:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:36:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:36:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-11-28 07:36:02,467 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2020-11-28 07:36:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:02,468 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-11-28 07:36:02,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-11-28 07:36:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 07:36:02,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:02,472 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:02,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:36:02,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2064959195, now seen corresponding path program 1 times [2020-11-28 07:36:02,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:02,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094339011] [2020-11-28 07:36:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:02,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094339011] [2020-11-28 07:36:02,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:02,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:02,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645228916] [2020-11-28 07:36:02,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:02,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:02,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:02,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:02,635 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-11-28 07:36:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:03,450 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-11-28 07:36:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:03,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-11-28 07:36:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:03,454 INFO L225 Difference]: With dead ends: 715 [2020-11-28 07:36:03,454 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:36:03,456 INFO L677 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 [2020-11-28 07:36:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:36:03,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:36:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:36:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-11-28 07:36:03,486 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-11-28 07:36:03,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:03,487 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-11-28 07:36:03,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-11-28 07:36:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-28 07:36:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:03,498 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:03,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:36:03,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:03,500 INFO L82 PathProgramCache]: Analyzing trace with hash -480427995, now seen corresponding path program 1 times [2020-11-28 07:36:03,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:03,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753177223] [2020-11-28 07:36:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:36:03,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753177223] [2020-11-28 07:36:03,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:03,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:03,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620568525] [2020-11-28 07:36:03,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:03,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:03,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:03,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:03,590 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-11-28 07:36:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:04,039 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-11-28 07:36:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:04,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-28 07:36:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:04,043 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:36:04,043 INFO L226 Difference]: Without dead ends: 571 [2020-11-28 07:36:04,045 INFO L677 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 [2020-11-28 07:36:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-28 07:36:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-11-28 07:36:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:36:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-11-28 07:36:04,066 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-11-28 07:36:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:04,066 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-11-28 07:36:04,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-11-28 07:36:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:36:04,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:04,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:04,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:36:04,070 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash -363767841, now seen corresponding path program 1 times [2020-11-28 07:36:04,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:04,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783698381] [2020-11-28 07:36:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 07:36:04,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783698381] [2020-11-28 07:36:04,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:04,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:04,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295326310] [2020-11-28 07:36:04,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:04,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:04,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:04,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:04,144 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2020-11-28 07:36:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:04,825 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2020-11-28 07:36:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:04,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-11-28 07:36:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:04,831 INFO L225 Difference]: With dead ends: 1354 [2020-11-28 07:36:04,832 INFO L226 Difference]: Without dead ends: 784 [2020-11-28 07:36:04,835 INFO L677 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 [2020-11-28 07:36:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-11-28 07:36:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-11-28 07:36:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:36:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2020-11-28 07:36:04,880 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2020-11-28 07:36:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:04,880 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2020-11-28 07:36:04,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2020-11-28 07:36:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-28 07:36:04,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:04,885 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:04,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:36:04,886 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:04,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash -338581387, now seen corresponding path program 1 times [2020-11-28 07:36:04,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:04,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883484089] [2020-11-28 07:36:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:36:04,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883484089] [2020-11-28 07:36:04,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:04,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:04,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350234135] [2020-11-28 07:36:04,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:04,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:04,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:04,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:04,975 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2020-11-28 07:36:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:05,419 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2020-11-28 07:36:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:05,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-11-28 07:36:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:05,427 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:36:05,427 INFO L226 Difference]: Without dead ends: 1068 [2020-11-28 07:36:05,431 INFO L677 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 [2020-11-28 07:36:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-28 07:36:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-11-28 07:36:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:36:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1175 transitions. [2020-11-28 07:36:05,469 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1175 transitions. Word has length 122 [2020-11-28 07:36:05,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:05,469 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1175 transitions. [2020-11-28 07:36:05,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1175 transitions. [2020-11-28 07:36:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-28 07:36:05,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:05,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:36:05,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:36:05,501 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:05,503 INFO L82 PathProgramCache]: Analyzing trace with hash -618939075, now seen corresponding path program 1 times [2020-11-28 07:36:05,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:05,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065490699] [2020-11-28 07:36:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-11-28 07:36:05,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065490699] [2020-11-28 07:36:05,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:05,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:05,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837841357] [2020-11-28 07:36:05,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:05,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:05,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:05,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:05,623 INFO L87 Difference]: Start difference. First operand 926 states and 1175 transitions. Second operand 3 states. [2020-11-28 07:36:06,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:06,014 INFO L93 Difference]: Finished difference Result 1851 states and 2349 transitions. [2020-11-28 07:36:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:06,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-28 07:36:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:06,020 INFO L225 Difference]: With dead ends: 1851 [2020-11-28 07:36:06,021 INFO L226 Difference]: Without dead ends: 926 [2020-11-28 07:36:06,023 INFO L677 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 [2020-11-28 07:36:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-28 07:36:06,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-11-28 07:36:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:36:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1161 transitions. [2020-11-28 07:36:06,048 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1161 transitions. Word has length 138 [2020-11-28 07:36:06,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:06,048 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1161 transitions. [2020-11-28 07:36:06,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1161 transitions. [2020-11-28 07:36:06,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-28 07:36:06,052 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:06,052 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:36:06,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:36:06,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:06,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2031263451, now seen corresponding path program 1 times [2020-11-28 07:36:06,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:06,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585528472] [2020-11-28 07:36:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-28 07:36:06,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585528472] [2020-11-28 07:36:06,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:06,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:06,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372417929] [2020-11-28 07:36:06,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:06,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:06,221 INFO L87 Difference]: Start difference. First operand 926 states and 1161 transitions. Second operand 4 states. [2020-11-28 07:36:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:06,799 INFO L93 Difference]: Finished difference Result 1922 states and 2403 transitions. [2020-11-28 07:36:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:06,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-28 07:36:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:06,809 INFO L225 Difference]: With dead ends: 1922 [2020-11-28 07:36:06,810 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:36:06,811 INFO L677 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 [2020-11-28 07:36:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:36:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-11-28 07:36:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:36:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-11-28 07:36:06,839 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-11-28 07:36:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:06,841 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-11-28 07:36:06,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-11-28 07:36:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 07:36:06,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:06,845 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:36:06,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:36:06,847 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:06,848 INFO L82 PathProgramCache]: Analyzing trace with hash -536182158, now seen corresponding path program 1 times [2020-11-28 07:36:06,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:06,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360821826] [2020-11-28 07:36:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 07:36:07,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360821826] [2020-11-28 07:36:07,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:07,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:07,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893612809] [2020-11-28 07:36:07,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:07,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:07,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:07,022 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-11-28 07:36:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:07,460 INFO L93 Difference]: Finished difference Result 2277 states and 2824 transitions. [2020-11-28 07:36:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:07,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 07:36:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:07,469 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:36:07,470 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:36:07,471 INFO L677 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 [2020-11-28 07:36:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:36:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2020-11-28 07:36:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:36:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2020-11-28 07:36:07,500 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 171 [2020-11-28 07:36:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:07,500 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2020-11-28 07:36:07,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2020-11-28 07:36:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-11-28 07:36:07,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:07,508 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-28 07:36:07,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:36:07,509 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:07,510 INFO L82 PathProgramCache]: Analyzing trace with hash 677815035, now seen corresponding path program 1 times [2020-11-28 07:36:07,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:07,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515971861] [2020-11-28 07:36:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-28 07:36:07,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515971861] [2020-11-28 07:36:07,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:07,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:36:07,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039829376] [2020-11-28 07:36:07,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:07,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:07,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:07,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:36:07,699 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 4 states. [2020-11-28 07:36:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:08,155 INFO L93 Difference]: Finished difference Result 2309 states and 2828 transitions. [2020-11-28 07:36:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:08,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2020-11-28 07:36:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:08,164 INFO L225 Difference]: With dead ends: 2309 [2020-11-28 07:36:08,164 INFO L226 Difference]: Without dead ends: 1242 [2020-11-28 07:36:08,168 INFO L677 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 [2020-11-28 07:36:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2020-11-28 07:36:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1139. [2020-11-28 07:36:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:36:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1375 transitions. [2020-11-28 07:36:08,206 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1375 transitions. Word has length 220 [2020-11-28 07:36:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:08,207 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1375 transitions. [2020-11-28 07:36:08,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1375 transitions. [2020-11-28 07:36:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-11-28 07:36:08,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:08,212 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-11-28 07:36:08,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:36:08,213 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash 733156514, now seen corresponding path program 1 times [2020-11-28 07:36:08,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:08,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775543819] [2020-11-28 07:36:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-11-28 07:36:08,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775543819] [2020-11-28 07:36:08,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:08,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:08,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374090819] [2020-11-28 07:36:08,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:08,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:08,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:08,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:08,371 INFO L87 Difference]: Start difference. First operand 1139 states and 1375 transitions. Second operand 3 states. [2020-11-28 07:36:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:08,733 INFO L93 Difference]: Finished difference Result 2277 states and 2749 transitions. [2020-11-28 07:36:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:08,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-11-28 07:36:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:08,739 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:36:08,739 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:36:08,741 INFO L677 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 [2020-11-28 07:36:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:36:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-11-28 07:36:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:36:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1326 transitions. [2020-11-28 07:36:08,770 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1326 transitions. Word has length 233 [2020-11-28 07:36:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:08,771 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1326 transitions. [2020-11-28 07:36:08,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1326 transitions. [2020-11-28 07:36:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-28 07:36:08,776 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:08,776 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-11-28 07:36:08,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:36:08,777 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash -995889596, now seen corresponding path program 1 times [2020-11-28 07:36:08,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:08,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566409314] [2020-11-28 07:36:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 82 proven. 261 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:36:09,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566409314] [2020-11-28 07:36:09,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838998317] [2020-11-28 07:36:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:09,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:36:09,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-28 07:36:09,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-28 07:36:09,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:36:09,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-11-28 07:36:09,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135642078] [2020-11-28 07:36:09,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:09,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:36:09,677 INFO L87 Difference]: Start difference. First operand 1139 states and 1326 transitions. Second operand 3 states. [2020-11-28 07:36:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:10,105 INFO L93 Difference]: Finished difference Result 2490 states and 2917 transitions. [2020-11-28 07:36:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:10,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-11-28 07:36:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:10,113 INFO L225 Difference]: With dead ends: 2490 [2020-11-28 07:36:10,113 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:36:10,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:36:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:36:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2020-11-28 07:36:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-28 07:36:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1410 transitions. [2020-11-28 07:36:10,150 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1410 transitions. Word has length 242 [2020-11-28 07:36:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:10,150 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1410 transitions. [2020-11-28 07:36:10,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1410 transitions. [2020-11-28 07:36:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-28 07:36:10,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:10,158 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:10,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 07:36:10,372 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash 112430357, now seen corresponding path program 1 times [2020-11-28 07:36:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:10,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890043333] [2020-11-28 07:36:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-28 07:36:10,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890043333] [2020-11-28 07:36:10,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256561061] [2020-11-28 07:36:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:11,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:36:11,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-28 07:36:11,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-11-28 07:36:11,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:36:11,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:36:11,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349674547] [2020-11-28 07:36:11,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:11,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:36:11,219 INFO L87 Difference]: Start difference. First operand 1210 states and 1410 transitions. Second operand 3 states. [2020-11-28 07:36:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:11,662 INFO L93 Difference]: Finished difference Result 2488 states and 2867 transitions. [2020-11-28 07:36:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:11,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2020-11-28 07:36:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:11,663 INFO L225 Difference]: With dead ends: 2488 [2020-11-28 07:36:11,663 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:36:11,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:36:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:36:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:36:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:36:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:36:11,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2020-11-28 07:36:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:11,667 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:36:11,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:36:11,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:36:11,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 07:36:11,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:36:12,367 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-11-28 07:36:12,776 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-11-28 07:36:12,779 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:36:12,779 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:36:12,779 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:36:12,779 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:36:12,780 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:36:12,781 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:36:12,782 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse3 (not (= ~a7~0 1))) (.cse2 (= ~a17~0 1)) (.cse8 (<= ~a16~0 4)) (.cse1 (<= ~a21~0 0)) (.cse7 (= ~a16~0 6)) (.cse5 (= ~a21~0 1)) (.cse9 (<= 14 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse4 (not .cse6))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse5 .cse6 .cse3 .cse2) (and .cse7 .cse1 .cse6) (and .cse5 .cse8 .cse3) (and .cse8 .cse6 .cse2) (and .cse8 .cse1 .cse6) (and .cse7 .cse4 (<= 15 ~a8~0)) (and .cse9 .cse5 .cse6) (and .cse9 .cse0 .cse4)))) [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:36:12,783 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:36:12,784 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:36:12,784 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:36:12,784 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:36:12,784 INFO L274 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:36:12,784 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:36:12,787 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:36:12,787 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L558(line 558) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:36:12,788 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:36:12,789 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse3 (not (= ~a7~0 1))) (.cse2 (= ~a17~0 1)) (.cse8 (<= ~a16~0 4)) (.cse1 (<= ~a21~0 0)) (.cse7 (= ~a16~0 6)) (.cse5 (= ~a21~0 1)) (.cse9 (<= 14 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse4 (not .cse6))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse5 .cse6 .cse3 .cse2) (and .cse7 .cse1 .cse6) (and .cse5 .cse8 .cse3) (and .cse8 .cse6 .cse2) (and .cse8 .cse1 .cse6) (and .cse7 .cse4 (<= 15 ~a8~0)) (and .cse9 .cse5 .cse6) (and .cse9 .cse0 .cse4)))) [2020-11-28 07:36:12,789 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:36:12,789 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:36:12,789 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:36:12,789 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:36:12,789 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:36:12,789 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:36:12,790 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:36:12,790 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:36:12,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:36:12 BoogieIcfgContainer [2020-11-28 07:36:12,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:36:12,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:36:12,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:36:12,838 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:36:12,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:00" (3/4) ... [2020-11-28 07:36:12,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:36:12,876 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-28 07:36:12,878 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:36:12,879 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:36:12,881 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:36:13,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4b9409a7-2d33-4258-bb6c-c40e80477c47/bin/utaipan/witness.graphml [2020-11-28 07:36:13,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:36:13,033 INFO L168 Benchmark]: Toolchain (without parser) took 15631.71 ms. Allocated memory was 98.6 MB in the beginning and 350.2 MB in the end (delta: 251.7 MB). Free memory was 60.1 MB in the beginning and 133.0 MB in the end (delta: -72.9 MB). Peak memory consumption was 177.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,034 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:36:13,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.30 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 58.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.77 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 53.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,035 INFO L168 Benchmark]: Boogie Preprocessor took 72.73 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 48.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,035 INFO L168 Benchmark]: RCFGBuilder took 2296.93 ms. Allocated memory was 98.6 MB in the beginning and 172.0 MB in the end (delta: 73.4 MB). Free memory was 48.4 MB in the beginning and 137.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,036 INFO L168 Benchmark]: TraceAbstraction took 12290.05 ms. Allocated memory was 172.0 MB in the beginning and 350.2 MB in the end (delta: 178.3 MB). Free memory was 137.7 MB in the beginning and 148.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 168.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,036 INFO L168 Benchmark]: Witness Printer took 194.71 ms. Allocated memory is still 350.2 MB. Free memory was 148.7 MB in the beginning and 133.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:13,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.30 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 58.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.77 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 53.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.73 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 48.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2296.93 ms. Allocated memory was 98.6 MB in the beginning and 172.0 MB in the end (delta: 73.4 MB). Free memory was 48.4 MB in the beginning and 137.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12290.05 ms. Allocated memory was 172.0 MB in the beginning and 350.2 MB in the end (delta: 178.3 MB). Free memory was 137.7 MB in the beginning and 148.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 168.4 MB. Max. memory is 16.1 GB. * Witness Printer took 194.71 ms. Allocated memory is still 350.2 MB. Free memory was 148.7 MB in the beginning and 133.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a16 <= 5 && !(a7 == 1)) && !(a20 == 1))) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && a21 <= 0) && a20 == 1)) || ((a21 == 1 && a16 <= 4) && !(a7 == 1))) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a21 <= 0) && a20 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 <= 5 && a21 <= 0) && a17 == 1) || ((a16 <= 5 && !(a7 == 1)) && !(a20 == 1))) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && a21 <= 0) && a20 == 1)) || ((a21 == 1 && a16 <= 4) && !(a7 == 1))) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || ((a16 <= 4 && a21 <= 0) && a20 == 1)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((14 <= a8 && a21 == 1) && a20 == 1)) || ((14 <= a8 && a16 <= 5) && !(a20 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 614 SDtfs, 954 SDslu, 60 SDs, 0 SdLazy, 2927 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1031 GetRequests, 1005 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 742 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 221 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2648 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 520 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2505 NumberOfCodeBlocks, 2505 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2985 ConstructedInterpolants, 0 QuantifiedInterpolants, 1962194 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1039 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 3204/3568 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...