./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label19.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_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label19.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/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 fb2e3e398833ac0456ed91fe24d981ec71617a12 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:31,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:31,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:31,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:31,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:31,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:31,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:31,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:31,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:31,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:31,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:31,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:31,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:31,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:31,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:31,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:31,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:31,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:31,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:31,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:31,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:31,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:31,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:31,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:31,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:31,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:31,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:31,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:31,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:31,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:31,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:31,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:32,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:32,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:32,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:32,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:32,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:32,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:32,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:32,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:32,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:32,008 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:32,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:32,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:32,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:32,055 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:32,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:32,055 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:32,055 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:32,056 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:32,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:32,056 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:32,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:32,057 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:32,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:32,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:32,058 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:32,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:32,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:32,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:32,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:32,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:32,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:32,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:32,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:32,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:32,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:32,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:32,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:32,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:32,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:32,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:32,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:32,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:32,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:32,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:32,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:32,065 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:32,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:32,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:32,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:32,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:32,066 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_37fe3d0b-6267-424e-8a93-27247725e9bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb2e3e398833ac0456ed91fe24d981ec71617a12 [2020-11-22 12:56:32,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:32,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:32,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:32,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:32,348 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:32,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2020-11-22 12:56:32,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/data/ec1267edb/4134172fb0f2467582c2b9db8ce2395e/FLAGaee39ec0a [2020-11-22 12:56:33,058 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:33,059 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2020-11-22 12:56:33,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/data/ec1267edb/4134172fb0f2467582c2b9db8ce2395e/FLAGaee39ec0a [2020-11-22 12:56:33,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/data/ec1267edb/4134172fb0f2467582c2b9db8ce2395e [2020-11-22 12:56:33,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:33,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:33,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:33,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:33,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:33,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28845211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33, skipping insertion in model container [2020-11-22 12:56:33,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:33,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:33,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:33,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:33,806 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:33,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:33,987 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:33,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33 WrapperNode [2020-11-22 12:56:33,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:33,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:33,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:33,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:33,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:34,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:34,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:34,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:34,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... [2020-11-22 12:56:34,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:34,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:34,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:34,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:34,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:56:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:34,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:36,635 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:36,635 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:56:36,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:36 BoogieIcfgContainer [2020-11-22 12:56:36,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:36,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:36,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:36,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:36,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:33" (1/3) ... [2020-11-22 12:56:36,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bb895d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:36, skipping insertion in model container [2020-11-22 12:56:36,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:33" (2/3) ... [2020-11-22 12:56:36,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bb895d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:36, skipping insertion in model container [2020-11-22 12:56:36,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:36" (3/3) ... [2020-11-22 12:56:36,648 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2020-11-22 12:56:36,659 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:36,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:56:36,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:56:36,711 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:36,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:36,712 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:36,712 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:36,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:36,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:36,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:36,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 12:56:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 12:56:36,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:36,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:36,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash -216556985, now seen corresponding path program 1 times [2020-11-22 12:56:36,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:36,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112782695] [2020-11-22 12:56:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:37,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112782695] [2020-11-22 12:56:37,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:37,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:37,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270029938] [2020-11-22 12:56:37,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:37,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:37,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:37,176 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 12:56:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:37,764 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 12:56:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:37,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 12:56:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:37,786 INFO L225 Difference]: With dead ends: 251 [2020-11-22 12:56:37,789 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:56:37,794 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 [2020-11-22 12:56:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:56:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:56:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:56:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-22 12:56:37,854 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-22 12:56:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:37,855 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-22 12:56:37,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-22 12:56:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-22 12:56:37,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:37,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:37,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:37,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1992967174, now seen corresponding path program 1 times [2020-11-22 12:56:37,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:37,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293608515] [2020-11-22 12:56:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:37,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293608515] [2020-11-22 12:56:37,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:37,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:37,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148289634] [2020-11-22 12:56:37,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:37,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:37,934 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-22 12:56:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:38,508 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-22 12:56:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:38,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-22 12:56:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:38,512 INFO L225 Difference]: With dead ends: 485 [2020-11-22 12:56:38,512 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 12:56:38,514 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 [2020-11-22 12:56:38,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 12:56:38,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 12:56:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 12:56:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-22 12:56:38,540 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-22 12:56:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:38,541 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-22 12:56:38,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-22 12:56:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-22 12:56:38,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:38,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:38,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:56:38,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:38,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1654450859, now seen corresponding path program 1 times [2020-11-22 12:56:38,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:38,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971524424] [2020-11-22 12:56:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:38,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971524424] [2020-11-22 12:56:38,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473680434] [2020-11-22 12:56:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:38,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:38,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:39,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:39,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:56:39,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 12:56:39,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203997775] [2020-11-22 12:56:39,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:39,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:39,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:39,048 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-22 12:56:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:39,604 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-22 12:56:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:39,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-22 12:56:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:39,609 INFO L225 Difference]: With dead ends: 565 [2020-11-22 12:56:39,610 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 12:56:39,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 12:56:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-22 12:56:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 12:56:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-22 12:56:39,654 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-22 12:56:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:39,654 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-22 12:56:39,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-22 12:56:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 12:56:39,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:39,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:39,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 12:56:39,856 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash -215868911, now seen corresponding path program 1 times [2020-11-22 12:56:39,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:39,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285084548] [2020-11-22 12:56:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:39,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285084548] [2020-11-22 12:56:39,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:39,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:39,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657115367] [2020-11-22 12:56:39,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:39,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:39,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:39,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:39,935 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-22 12:56:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:40,216 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-22 12:56:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:40,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 12:56:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:40,220 INFO L225 Difference]: With dead ends: 805 [2020-11-22 12:56:40,220 INFO L226 Difference]: Without dead ends: 403 [2020-11-22 12:56:40,222 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 [2020-11-22 12:56:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-22 12:56:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-22 12:56:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 12:56:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-22 12:56:40,238 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-22 12:56:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:40,239 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-22 12:56:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-22 12:56:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 12:56:40,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:40,241 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:40,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:56:40,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:40,242 INFO L82 PathProgramCache]: Analyzing trace with hash 441511507, now seen corresponding path program 1 times [2020-11-22 12:56:40,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:40,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240748315] [2020-11-22 12:56:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:56:40,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240748315] [2020-11-22 12:56:40,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:40,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:56:40,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935168497] [2020-11-22 12:56:40,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:40,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:40,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:40,318 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-22 12:56:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:40,836 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-22 12:56:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:40,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 12:56:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:40,841 INFO L225 Difference]: With dead ends: 885 [2020-11-22 12:56:40,841 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 12:56:40,843 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 [2020-11-22 12:56:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 12:56:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-22 12:56:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-22 12:56:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-22 12:56:40,861 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-22 12:56:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:40,862 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-22 12:56:40,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-22 12:56:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-22 12:56:40,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:40,865 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:40,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:56:40,865 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1831488483, now seen corresponding path program 1 times [2020-11-22 12:56:40,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:40,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937819660] [2020-11-22 12:56:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-22 12:56:40,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937819660] [2020-11-22 12:56:40,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525537171] [2020-11-22 12:56:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:41,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:41,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-22 12:56:41,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-22 12:56:41,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:56:41,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-22 12:56:41,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285535713] [2020-11-22 12:56:41,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:41,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:41,195 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-22 12:56:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:41,641 INFO L93 Difference]: Finished difference Result 1285 states and 1916 transitions. [2020-11-22 12:56:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:41,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-22 12:56:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:41,647 INFO L225 Difference]: With dead ends: 1285 [2020-11-22 12:56:41,647 INFO L226 Difference]: Without dead ends: 803 [2020-11-22 12:56:41,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-22 12:56:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-11-22 12:56:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-22 12:56:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2020-11-22 12:56:41,669 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 133 [2020-11-22 12:56:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:41,670 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2020-11-22 12:56:41,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2020-11-22 12:56:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-22 12:56:41,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:41,673 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-11-22 12:56:41,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:41,896 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash 294615081, now seen corresponding path program 1 times [2020-11-22 12:56:41,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:41,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890951977] [2020-11-22 12:56:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-11-22 12:56:42,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890951977] [2020-11-22 12:56:42,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094649845] [2020-11-22 12:56:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:42,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:42,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-11-22 12:56:42,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-11-22 12:56:42,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:56:42,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-11-22 12:56:42,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335270602] [2020-11-22 12:56:42,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:42,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:42,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:42,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:42,400 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand 4 states. [2020-11-22 12:56:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:43,134 INFO L93 Difference]: Finished difference Result 1765 states and 2460 transitions. [2020-11-22 12:56:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:43,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-11-22 12:56:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:43,141 INFO L225 Difference]: With dead ends: 1765 [2020-11-22 12:56:43,141 INFO L226 Difference]: Without dead ends: 1123 [2020-11-22 12:56:43,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-11-22 12:56:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-11-22 12:56:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-11-22 12:56:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1423 transitions. [2020-11-22 12:56:43,173 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1423 transitions. Word has length 181 [2020-11-22 12:56:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:43,173 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1423 transitions. [2020-11-22 12:56:43,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1423 transitions. [2020-11-22 12:56:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-22 12:56:43,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:43,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-11-22 12:56:43,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:43,397 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:43,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1947175616, now seen corresponding path program 1 times [2020-11-22 12:56:43,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:43,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832874267] [2020-11-22 12:56:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-22 12:56:43,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832874267] [2020-11-22 12:56:43,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:43,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:43,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820000746] [2020-11-22 12:56:43,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:43,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:43,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:43,570 INFO L87 Difference]: Start difference. First operand 1123 states and 1423 transitions. Second operand 3 states. [2020-11-22 12:56:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:44,010 INFO L93 Difference]: Finished difference Result 2723 states and 3459 transitions. [2020-11-22 12:56:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:44,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-22 12:56:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:44,011 INFO L225 Difference]: With dead ends: 2723 [2020-11-22 12:56:44,012 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:56:44,014 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 [2020-11-22 12:56:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:56:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:56:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:56:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:56:44,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-11-22 12:56:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:44,015 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:56:44,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:56:44,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:56:44,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:56:44,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:56:44,183 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-11-22 12:56:44,339 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-11-22 12:56:44,342 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 12:56:44,342 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 12:56:44,342 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 12:56:44,343 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 12:56:44,344 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L454-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 12:56:44,345 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 12:56:44,346 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 12:56:44,346 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 12:56:44,348 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 12:56:44,348 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:56:44,348 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 12:56:44,348 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 12:56:44,349 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 12:56:44,349 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 12:56:44,349 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 12:56:44,349 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 12:56:44,350 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 12:56:44,350 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 12:56:44,350 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 12:56:44,350 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 12:56:44,351 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 12:56:44,351 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 12:56:44,351 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 12:56:44,352 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 12:56:44,352 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 12:56:44,352 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 12:56:44,352 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a28~0 9)) (.cse3 (= ~a25~0 0)) (.cse4 (= ~a19~0 1)) (.cse0 (<= 8 ~a17~0)) (.cse5 (< ~a28~0 11)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2) (and .cse1 (= ~a11~0 1) .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse3 .cse5 .cse2) (and .cse4 .cse0 .cse2) (and (<= ~a19~0 0) .cse5 .cse2))) [2020-11-22 12:56:44,354 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 12:56:44,354 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 12:56:44,354 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 12:56:44,354 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 12:56:44,354 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 12:56:44,354 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 12:56:44,354 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 12:56:44,355 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 12:56:44,355 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:56:44,355 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 12:56:44,355 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 12:56:44,355 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a28~0 9)) (.cse3 (= ~a25~0 0)) (.cse4 (= ~a19~0 1)) (.cse0 (<= 8 ~a17~0)) (.cse5 (< ~a28~0 11)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2) (and .cse1 (= ~a11~0 1) .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse3 .cse5 .cse2) (and .cse4 .cse0 .cse2) (and (<= ~a19~0 0) .cse5 .cse2))) [2020-11-22 12:56:44,356 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 12:56:44,356 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 12:56:44,356 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 12:56:44,356 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 12:56:44,356 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 12:56:44,357 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 12:56:44,358 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 12:56:44,358 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 12:56:44,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:44 BoogieIcfgContainer [2020-11-22 12:56:44,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:44,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:44,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:44,384 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:44,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:36" (3/4) ... [2020-11-22 12:56:44,389 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:56:44,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-11-22 12:56:44,428 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 12:56:44,430 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:56:44,432 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:56:44,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37fe3d0b-6267-424e-8a93-27247725e9bf/bin/utaipan/witness.graphml [2020-11-22 12:56:44,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:44,611 INFO L168 Benchmark]: Toolchain (without parser) took 11282.43 ms. Allocated memory was 130.0 MB in the beginning and 249.6 MB in the end (delta: 119.5 MB). Free memory was 98.0 MB in the beginning and 206.2 MB in the end (delta: -108.2 MB). Peak memory consumption was 145.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,612 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:44,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.50 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 90.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.87 ms. Allocated memory is still 130.0 MB. Free memory was 90.1 MB in the beginning and 84.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,613 INFO L168 Benchmark]: Boogie Preprocessor took 58.46 ms. Allocated memory is still 130.0 MB. Free memory was 84.8 MB in the beginning and 80.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,613 INFO L168 Benchmark]: RCFGBuilder took 2508.48 ms. Allocated memory was 130.0 MB in the beginning and 167.8 MB in the end (delta: 37.7 MB). Free memory was 80.2 MB in the beginning and 131.7 MB in the end (delta: -51.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,614 INFO L168 Benchmark]: TraceAbstraction took 7743.26 ms. Allocated memory was 167.8 MB in the beginning and 249.6 MB in the end (delta: 81.8 MB). Free memory was 131.7 MB in the beginning and 80.2 MB in the end (delta: 51.5 MB). Peak memory consumption was 133.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,614 INFO L168 Benchmark]: Witness Printer took 227.35 ms. Allocated memory is still 249.6 MB. Free memory was 80.2 MB in the beginning and 206.2 MB in the end (delta: -126.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:44,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 657.50 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 90.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.87 ms. Allocated memory is still 130.0 MB. Free memory was 90.1 MB in the beginning and 84.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.46 ms. Allocated memory is still 130.0 MB. Free memory was 84.8 MB in the beginning and 80.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2508.48 ms. Allocated memory was 130.0 MB in the beginning and 167.8 MB in the end (delta: 37.7 MB). Free memory was 80.2 MB in the beginning and 131.7 MB in the end (delta: -51.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7743.26 ms. Allocated memory was 167.8 MB in the beginning and 249.6 MB in the end (delta: 81.8 MB). Free memory was 131.7 MB in the beginning and 80.2 MB in the end (delta: 51.5 MB). Peak memory consumption was 133.3 MB. Max. memory is 16.1 GB. * Witness Printer took 227.35 ms. Allocated memory is still 249.6 MB. Free memory was 80.2 MB in the beginning and 206.2 MB in the end (delta: -126.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((8 <= a17 && a28 <= 9) && a17 <= 8) || ((a28 <= 9 && a11 == 1) && a17 <= 8)) || ((a25 == 0 && a28 <= 9) && a17 <= 8)) || (((a19 == 1 && a25 == 0) && a28 < 11) && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((a19 <= 0 && a28 < 11) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((8 <= a17 && a28 <= 9) && a17 <= 8) || ((a28 <= 9 && a11 == 1) && a17 <= 8)) || ((a25 == 0 && a28 <= 9) && a17 <= 8)) || (((a19 == 1 && a25 == 0) && a28 < 11) && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((a19 <= 0 && a28 < 11) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 434 SDtfs, 539 SDslu, 40 SDs, 0 SdLazy, 1844 SolverSat, 482 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 820 GetRequests, 803 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 240 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 129 HoareAnnotationTreeSize, 3 FomulaSimplifications, 670 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1353 NumberOfCodeBlocks, 1353 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1742 ConstructedInterpolants, 0 QuantifiedInterpolants, 391356 SizeOfPredicates, 2 NumberOfNonLiveVariables, 986 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 1091/1100 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...