./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label54.c -s /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/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 7d10b612b7800802e72f11ddc9fa5d7db7eebce7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:44:07,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:44:07,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:44:07,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:44:07,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:44:07,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:44:07,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:44:07,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:44:07,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:44:07,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:44:07,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:44:07,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:44:07,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:44:07,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:44:07,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:44:07,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:44:07,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:44:07,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:44:07,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:44:07,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:44:07,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:44:07,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:44:07,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:44:07,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:44:07,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:44:07,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:44:07,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:44:07,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:44:07,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:44:07,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:44:07,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:44:07,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:44:07,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:44:07,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:44:07,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:44:07,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:44:07,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:44:07,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:44:07,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:44:07,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:44:07,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:44:07,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:44:07,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:44:07,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:44:07,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:44:07,218 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:44:07,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:44:07,219 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:44:07,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:44:07,220 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:44:07,220 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:44:07,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:44:07,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:44:07,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:44:07,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:44:07,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:44:07,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:44:07,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:44:07,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:44:07,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:44:07,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:44:07,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:44:07,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:44:07,223 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:44:07,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:44:07,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:44:07,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:44:07,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:44:07,223 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_53d5681c-a047-40ce-ad0a-ec62842eaca2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d10b612b7800802e72f11ddc9fa5d7db7eebce7 [2020-12-09 09:44:07,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:44:07,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:44:07,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:44:07,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:44:07,441 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:44:07,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label54.c [2020-12-09 09:44:07,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/data/6bec78f91/bf407928638d40a983e16f6fe5ceeb91/FLAGd188be0b6 [2020-12-09 09:44:07,925 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:44:07,925 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/sv-benchmarks/c/eca-rers2012/Problem02_label54.c [2020-12-09 09:44:07,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/data/6bec78f91/bf407928638d40a983e16f6fe5ceeb91/FLAGd188be0b6 [2020-12-09 09:44:07,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/data/6bec78f91/bf407928638d40a983e16f6fe5ceeb91 [2020-12-09 09:44:07,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:44:07,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:44:07,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:44:07,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:44:07,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:44:07,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:44:07" (1/1) ... [2020-12-09 09:44:07,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d323cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:07, skipping insertion in model container [2020-12-09 09:44:07,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:44:07" (1/1) ... [2020-12-09 09:44:07,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:44:08,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:44:08,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/sv-benchmarks/c/eca-rers2012/Problem02_label54.c[16901,16914] [2020-12-09 09:44:08,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:44:08,239 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:44:08,301 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/sv-benchmarks/c/eca-rers2012/Problem02_label54.c[16901,16914] [2020-12-09 09:44:08,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:44:08,328 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:44:08,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08 WrapperNode [2020-12-09 09:44:08,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:44:08,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:44:08,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:44:08,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:44:08,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:44:08,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:44:08,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:44:08,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:44:08,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... [2020-12-09 09:44:08,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:44:08,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:44:08,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:44:08,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:44:08,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/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 [2020-12-09 09:44:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:44:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:44:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:44:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:44:09,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:44:09,761 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 09:44:09,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:44:09 BoogieIcfgContainer [2020-12-09 09:44:09,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:44:09,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:44:09,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:44:09,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:44:09,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:44:07" (1/3) ... [2020-12-09 09:44:09,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52930b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:44:09, skipping insertion in model container [2020-12-09 09:44:09,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:44:08" (2/3) ... [2020-12-09 09:44:09,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52930b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:44:09, skipping insertion in model container [2020-12-09 09:44:09,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:44:09" (3/3) ... [2020-12-09 09:44:09,768 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-12-09 09:44:09,778 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:44:09,781 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:44:09,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:44:09,803 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:44:09,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:44:09,804 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:44:09,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:44:09,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:44:09,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:44:09,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:44:09,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:44:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 09:44:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 09:44:09,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:09,820 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] [2020-12-09 09:44:09,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash 925944902, now seen corresponding path program 1 times [2020-12-09 09:44:09,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:09,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161278705] [2020-12-09 09:44:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:44:10,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161278705] [2020-12-09 09:44:10,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:10,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:44:10,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931850489] [2020-12-09 09:44:10,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:10,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:10,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:10,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:10,128 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 09:44:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:10,496 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 09:44:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:10,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 09:44:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:10,506 INFO L225 Difference]: With dead ends: 251 [2020-12-09 09:44:10,506 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 09:44:10,508 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 [2020-12-09 09:44:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 09:44:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 09:44:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 09:44:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-12-09 09:44:10,544 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-12-09 09:44:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:10,545 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-12-09 09:44:10,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-12-09 09:44:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 09:44:10,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:10,549 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:44:10,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:44:10,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:10,550 INFO L82 PathProgramCache]: Analyzing trace with hash 221745381, now seen corresponding path program 1 times [2020-12-09 09:44:10,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:10,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232922220] [2020-12-09 09:44:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:44:10,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232922220] [2020-12-09 09:44:10,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:10,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:44:10,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644923917] [2020-12-09 09:44:10,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:10,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:10,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:10,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:10,615 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-12-09 09:44:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:10,891 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-12-09 09:44:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:10,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 09:44:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:10,895 INFO L225 Difference]: With dead ends: 485 [2020-12-09 09:44:10,895 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 09:44:10,896 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 [2020-12-09 09:44:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 09:44:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 09:44:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 09:44:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2020-12-09 09:44:10,912 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2020-12-09 09:44:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:10,912 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2020-12-09 09:44:10,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2020-12-09 09:44:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 09:44:10,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:10,915 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:44:10,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:44:10,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:10,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1583677943, now seen corresponding path program 1 times [2020-12-09 09:44:10,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:10,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249071388] [2020-12-09 09:44:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:44:10,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249071388] [2020-12-09 09:44:10,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:10,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:44:10,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319068930] [2020-12-09 09:44:10,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:10,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:10,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:10,975 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2020-12-09 09:44:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:11,121 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2020-12-09 09:44:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:11,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 09:44:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:11,124 INFO L225 Difference]: With dead ends: 645 [2020-12-09 09:44:11,124 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 09:44:11,125 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 [2020-12-09 09:44:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 09:44:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 09:44:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 09:44:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2020-12-09 09:44:11,137 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2020-12-09 09:44:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:11,137 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2020-12-09 09:44:11,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2020-12-09 09:44:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 09:44:11,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:11,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:44:11,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:44:11,140 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2134437762, now seen corresponding path program 1 times [2020-12-09 09:44:11,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:11,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465269849] [2020-12-09 09:44:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:44:11,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465269849] [2020-12-09 09:44:11,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:11,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:44:11,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519721545] [2020-12-09 09:44:11,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:11,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:11,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:11,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:11,181 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2020-12-09 09:44:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:11,449 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2020-12-09 09:44:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:11,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 09:44:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:11,451 INFO L225 Difference]: With dead ends: 725 [2020-12-09 09:44:11,451 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 09:44:11,452 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 [2020-12-09 09:44:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 09:44:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 09:44:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 09:44:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2020-12-09 09:44:11,466 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2020-12-09 09:44:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:11,466 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2020-12-09 09:44:11,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2020-12-09 09:44:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 09:44:11,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:11,469 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:44:11,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 09:44:11,469 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:11,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2118180280, now seen corresponding path program 1 times [2020-12-09 09:44:11,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:11,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897254611] [2020-12-09 09:44:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:44:11,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897254611] [2020-12-09 09:44:11,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527531750] [2020-12-09 09:44:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/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 [2020-12-09 09:44:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:44:11,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:44:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 09:44:11,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:44:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 09:44:11,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:44:11,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 09:44:11,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135779870] [2020-12-09 09:44:11,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:11,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:11,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:44:11,884 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 3 states. [2020-12-09 09:44:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:12,162 INFO L93 Difference]: Finished difference Result 965 states and 1291 transitions. [2020-12-09 09:44:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:12,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 09:44:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:12,166 INFO L225 Difference]: With dead ends: 965 [2020-12-09 09:44:12,166 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 09:44:12,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:44:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 09:44:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 09:44:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 09:44:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 561 transitions. [2020-12-09 09:44:12,176 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 561 transitions. Word has length 107 [2020-12-09 09:44:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:12,176 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 561 transitions. [2020-12-09 09:44:12,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 561 transitions. [2020-12-09 09:44:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-09 09:44:12,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:12,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:44:12,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:44:12,380 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:12,381 INFO L82 PathProgramCache]: Analyzing trace with hash -648559543, now seen corresponding path program 1 times [2020-12-09 09:44:12,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:12,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626993897] [2020-12-09 09:44:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:44:12,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626993897] [2020-12-09 09:44:12,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:12,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:44:12,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661335977] [2020-12-09 09:44:12,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:12,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:12,540 INFO L87 Difference]: Start difference. First operand 483 states and 561 transitions. Second operand 3 states. [2020-12-09 09:44:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:12,774 INFO L93 Difference]: Finished difference Result 1365 states and 1593 transitions. [2020-12-09 09:44:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:12,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-09 09:44:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:12,778 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 09:44:12,778 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 09:44:12,779 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 [2020-12-09 09:44:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 09:44:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-12-09 09:44:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 09:44:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 816 transitions. [2020-12-09 09:44:12,797 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 816 transitions. Word has length 128 [2020-12-09 09:44:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:12,798 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 816 transitions. [2020-12-09 09:44:12,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 816 transitions. [2020-12-09 09:44:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-09 09:44:12,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:12,801 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 09:44:12,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 09:44:12,801 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1260909869, now seen corresponding path program 1 times [2020-12-09 09:44:12,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:12,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416863010] [2020-12-09 09:44:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-09 09:44:12,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416863010] [2020-12-09 09:44:12,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:12,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:44:12,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398240582] [2020-12-09 09:44:12,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:12,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:12,874 INFO L87 Difference]: Start difference. First operand 723 states and 816 transitions. Second operand 3 states. [2020-12-09 09:44:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:13,097 INFO L93 Difference]: Finished difference Result 1685 states and 1903 transitions. [2020-12-09 09:44:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:13,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-12-09 09:44:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:13,101 INFO L225 Difference]: With dead ends: 1685 [2020-12-09 09:44:13,101 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 09:44:13,102 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 [2020-12-09 09:44:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 09:44:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-12-09 09:44:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-12-09 09:44:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 612 transitions. [2020-12-09 09:44:13,113 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 612 transitions. Word has length 170 [2020-12-09 09:44:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:13,113 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 612 transitions. [2020-12-09 09:44:13,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 612 transitions. [2020-12-09 09:44:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-09 09:44:13,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:13,116 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-12-09 09:44:13,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 09:44:13,116 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1719959350, now seen corresponding path program 1 times [2020-12-09 09:44:13,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:13,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523748719] [2020-12-09 09:44:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 09:44:13,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523748719] [2020-12-09 09:44:13,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:44:13,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:44:13,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660467118] [2020-12-09 09:44:13,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:13,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:13,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:13,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:44:13,185 INFO L87 Difference]: Start difference. First operand 563 states and 612 transitions. Second operand 3 states. [2020-12-09 09:44:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:13,401 INFO L93 Difference]: Finished difference Result 1205 states and 1325 transitions. [2020-12-09 09:44:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:13,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-09 09:44:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:13,404 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 09:44:13,404 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 09:44:13,405 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 [2020-12-09 09:44:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 09:44:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 09:44:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 09:44:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 693 transitions. [2020-12-09 09:44:13,416 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 693 transitions. Word has length 205 [2020-12-09 09:44:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:13,416 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 693 transitions. [2020-12-09 09:44:13,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 693 transitions. [2020-12-09 09:44:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-09 09:44:13,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:13,418 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-12-09 09:44:13,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 09:44:13,419 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash -624391203, now seen corresponding path program 1 times [2020-12-09 09:44:13,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:13,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56982178] [2020-12-09 09:44:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-09 09:44:13,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56982178] [2020-12-09 09:44:13,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023220798] [2020-12-09 09:44:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/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 [2020-12-09 09:44:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:13,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:44:13,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:44:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-12-09 09:44:13,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:44:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-12-09 09:44:13,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:44:13,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 09:44:13,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253906373] [2020-12-09 09:44:13,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:44:13,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:13,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:44:13,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:44:13,971 INFO L87 Difference]: Start difference. First operand 643 states and 693 transitions. Second operand 3 states. [2020-12-09 09:44:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:14,148 INFO L93 Difference]: Finished difference Result 1125 states and 1222 transitions. [2020-12-09 09:44:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:44:14,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-09 09:44:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:14,154 INFO L225 Difference]: With dead ends: 1125 [2020-12-09 09:44:14,154 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 09:44:14,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:44:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 09:44:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 09:44:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 09:44:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1219 transitions. [2020-12-09 09:44:14,180 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1219 transitions. Word has length 215 [2020-12-09 09:44:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:14,181 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1219 transitions. [2020-12-09 09:44:14,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:44:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1219 transitions. [2020-12-09 09:44:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-12-09 09:44:14,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:14,184 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 09:44:14,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:44:14,385 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1584104517, now seen corresponding path program 1 times [2020-12-09 09:44:14,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:14,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388504055] [2020-12-09 09:44:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 190 proven. 96 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:44:14,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388504055] [2020-12-09 09:44:14,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684946816] [2020-12-09 09:44:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/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 [2020-12-09 09:44:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:14,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:44:14,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:44:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 239 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 09:44:14,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:44:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 239 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 09:44:14,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005381106] [2020-12-09 09:44:15,013 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 09:44:15,013 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:44:15,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:44:15,023 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:44:15,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:44:21,160 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:21,281 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:21,440 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:21,560 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:21,713 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:21,834 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:22,029 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 153 [2020-12-09 09:44:22,151 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:22,279 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:22,401 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:22,534 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-12-09 09:44:25,012 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:25,132 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:25,288 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:25,407 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:25,558 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:25,676 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:25,858 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 153 [2020-12-09 09:44:25,976 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:26,103 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:26,221 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 09:44:30,254 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2020-12-09 09:44:30,326 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6444 conjuctions. This might take some time... [2020-12-09 09:44:30,518 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-12-09 09:44:30,525 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2020-12-09 09:44:30,587 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6444 conjuctions. This might take some time... [2020-12-09 09:44:30,780 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-12-09 09:44:30,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22 [2020-12-09 09:44:30,937 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6444 conjuctions. This might take some time... [2020-12-09 09:44:31,126 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 320 conjuctions. [2020-12-09 09:44:34,106 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:44:34,467 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2020-12-09 09:44:34,696 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-12-09 09:44:34,820 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-09 09:44:35,089 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-12-09 09:44:35,367 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-12-09 09:44:35,681 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-12-09 09:44:36,111 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 09:44:38,593 WARN L197 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-12-09 09:44:44,260 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:44:44,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:44:44,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2020-12-09 09:44:44,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64069430] [2020-12-09 09:44:44,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 09:44:44,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 09:44:44,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-09 09:44:44,262 INFO L87 Difference]: Start difference. First operand 1123 states and 1219 transitions. Second operand 8 states. [2020-12-09 09:44:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:45,024 INFO L93 Difference]: Finished difference Result 2275 states and 2466 transitions. [2020-12-09 09:44:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 09:44:45,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-12-09 09:44:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:45,027 INFO L225 Difference]: With dead ends: 2275 [2020-12-09 09:44:45,028 INFO L226 Difference]: Without dead ends: 901 [2020-12-09 09:44:45,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 488 SyntacticMatches, 187 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-09 09:44:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-12-09 09:44:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 803. [2020-12-09 09:44:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 09:44:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 860 transitions. [2020-12-09 09:44:45,046 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 860 transitions. Word has length 228 [2020-12-09 09:44:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:45,047 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 860 transitions. [2020-12-09 09:44:45,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 09:44:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 860 transitions. [2020-12-09 09:44:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-12-09 09:44:45,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:44:45,050 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:44:45,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 09:44:45,251 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:44:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:44:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1212366178, now seen corresponding path program 1 times [2020-12-09 09:44:45,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:44:45,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129064127] [2020-12-09 09:44:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:44:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 212 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:44:45,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129064127] [2020-12-09 09:44:45,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060749808] [2020-12-09 09:44:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:44:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:44:45,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:44:45,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:44:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-12-09 09:44:45,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:44:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-12-09 09:44:46,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:44:46,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 10 [2020-12-09 09:44:46,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931963815] [2020-12-09 09:44:46,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:44:46,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:44:46,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:44:46,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 09:44:46,093 INFO L87 Difference]: Start difference. First operand 803 states and 860 transitions. Second operand 4 states. [2020-12-09 09:44:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:44:46,329 INFO L93 Difference]: Finished difference Result 1043 states and 1118 transitions. [2020-12-09 09:44:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:44:46,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 278 [2020-12-09 09:44:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:44:46,330 INFO L225 Difference]: With dead ends: 1043 [2020-12-09 09:44:46,330 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:44:46,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-09 09:44:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:44:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:44:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:44:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:44:46,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2020-12-09 09:44:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:44:46,332 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:44:46,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:44:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:44:46,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:44:46,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1242 [2020-12-09 09:44:46,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:44:46,845 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-09 09:44:47,083 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 09:44:47,086 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 09:44:47,087 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 485) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 09:44:47,088 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 09:44:47,089 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 09:44:47,090 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= 10 ~a28~0)) (.cse6 (= ~a25~0 ~a11~0)) (.cse7 (= ~a25~0 0)) (.cse3 (<= ~a28~0 10)) (.cse10 (= ~a11~0 1)) (.cse5 (<= ~a28~0 7)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 8)) (.cse0 (= ~a19~0 1)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse2) (and .cse6 .cse7 .cse8 .cse9 .cse5) (and .cse1 .cse2 .cse10 .cse3) (and .cse4 .cse10 .cse2 .cse3) (and .cse6 .cse7 .cse8 .cse9 (= ~a28~0 8)) (and .cse6 .cse0 .cse7 .cse8 .cse9 .cse3) (and .cse0 .cse10 .cse2 .cse3) (and .cse8 .cse9 .cse4 (= ~a28~0 10)) (and .cse10 .cse5 .cse2) (and .cse0 .cse8 .cse9 .cse4) (and (<= 9 ~a28~0) .cse0 .cse4 .cse2))) [2020-12-09 09:44:47,090 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 09:44:47,090 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 09:44:47,090 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 09:44:47,090 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 09:44:47,090 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 09:44:47,090 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 09:44:47,090 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point L481-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= 10 ~a28~0)) (.cse6 (= ~a25~0 ~a11~0)) (.cse7 (= ~a25~0 0)) (.cse3 (<= ~a28~0 10)) (.cse10 (= ~a11~0 1)) (.cse5 (<= ~a28~0 7)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 8)) (.cse0 (= ~a19~0 1)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse2) (and .cse6 .cse7 .cse8 .cse9 .cse5) (and .cse1 .cse2 .cse10 .cse3) (and .cse4 .cse10 .cse2 .cse3) (and .cse6 .cse7 .cse8 .cse9 (= ~a28~0 8)) (and .cse6 .cse0 .cse7 .cse8 .cse9 .cse3) (and .cse0 .cse10 .cse2 .cse3) (and .cse8 .cse9 .cse4 (= ~a28~0 10)) (and .cse10 .cse5 .cse2) (and .cse0 .cse8 .cse9 .cse4) (and (<= 9 ~a28~0) .cse0 .cse4 .cse2))) [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 09:44:47,091 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 09:44:47,092 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 09:44:47,093 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 09:44:47,093 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 09:44:47,093 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 09:44:47,093 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 09:44:47,093 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 09:44:47,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:44:47 BoogieIcfgContainer [2020-12-09 09:44:47,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:44:47,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:44:47,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:44:47,113 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:44:47,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:44:09" (3/4) ... [2020-12-09 09:44:47,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:44:47,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-12-09 09:44:47,137 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 09:44:47,138 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 09:44:47,140 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 09:44:47,243 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_53d5681c-a047-40ce-ad0a-ec62842eaca2/bin/utaipan/witness.graphml [2020-12-09 09:44:47,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:44:47,244 INFO L168 Benchmark]: Toolchain (without parser) took 39292.60 ms. Allocated memory was 92.3 MB in the beginning and 589.3 MB in the end (delta: 497.0 MB). Free memory was 50.1 MB in the beginning and 458.9 MB in the end (delta: -408.8 MB). Peak memory consumption was 89.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,244 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:44:47,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.24 ms. Allocated memory is still 92.3 MB. Free memory was 49.8 MB in the beginning and 47.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.29 ms. Allocated memory is still 92.3 MB. Free memory was 47.4 MB in the beginning and 67.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,245 INFO L168 Benchmark]: Boogie Preprocessor took 42.33 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 63.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,245 INFO L168 Benchmark]: RCFGBuilder took 1315.91 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 63.1 MB in the beginning and 103.4 MB in the end (delta: -40.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,245 INFO L168 Benchmark]: TraceAbstraction took 37348.95 ms. Allocated memory was 161.5 MB in the beginning and 589.3 MB in the end (delta: 427.8 MB). Free memory was 103.4 MB in the beginning and 473.5 MB in the end (delta: -370.1 MB). Peak memory consumption was 332.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,246 INFO L168 Benchmark]: Witness Printer took 129.66 ms. Allocated memory is still 589.3 MB. Free memory was 473.5 MB in the beginning and 458.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:44:47,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 92.3 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.24 ms. Allocated memory is still 92.3 MB. Free memory was 49.8 MB in the beginning and 47.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.29 ms. Allocated memory is still 92.3 MB. Free memory was 47.4 MB in the beginning and 67.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.33 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 63.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1315.91 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 63.1 MB in the beginning and 103.4 MB in the end (delta: -40.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37348.95 ms. Allocated memory was 161.5 MB in the beginning and 589.3 MB in the end (delta: 427.8 MB). Free memory was 103.4 MB in the beginning and 473.5 MB in the end (delta: -370.1 MB). Peak memory consumption was 332.4 MB. Max. memory is 16.1 GB. * Witness Printer took 129.66 ms. Allocated memory is still 589.3 MB. Free memory was 473.5 MB in the beginning and 458.9 MB in the end (delta: 14.7 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: 485]: call to reach_error is unreachable For all program executions holds that call to reach_error is 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: (((((((((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || (((10 <= a28 && a17 <= 8) && a11 == 1) && a28 <= 10)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && a28 == 8)) || (((((a25 == a11 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || (((a19 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || (((a21 == 1 && a17 == 8) && a25 == 1) && a28 == 10)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1)) || (((9 <= a28 && a19 == 1) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 7)) || (((10 <= a28 && a17 <= 8) && a11 == 1) && a28 <= 10)) || (((a25 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a17 == 8) && a28 == 8)) || (((((a25 == a11 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || (((a19 == 1 && a11 == 1) && a17 <= 8) && a28 <= 10)) || (((a21 == 1 && a17 == 8) && a25 == 1) && a28 == 10)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1)) || (((9 <= a28 && a19 == 1) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.7s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 613 SDtfs, 723 SDslu, 96 SDs, 0 SdLazy, 3252 SolverSat, 474 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1919 GetRequests, 1690 SyntacticMatches, 189 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=9, 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, 11 MinimizatonAttempts, 178 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 333 HoareAnnotationTreeSize, 3 FomulaSimplifications, 788 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 172 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2539 NumberOfCodeBlocks, 2539 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3348 ConstructedInterpolants, 0 QuantifiedInterpolants, 2691962 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1582 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 3004/3510 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...