./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.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_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI --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 98618c76bfa0eca070eb71a2130d02b24ef80e44 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:17,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:17,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:17,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:17,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:17,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:17,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:17,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:17,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:17,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:17,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:17,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:17,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:17,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:17,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:17,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:17,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:17,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:17,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:17,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:17,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:17,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:17,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:17,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:17,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:17,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:17,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:17,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:17,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:17,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:17,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:17,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:17,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:17,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:17,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:17,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:17,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:17,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:17,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:17,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:17,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:17,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:17,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:17,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:17,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:17,619 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:17,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:17,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:17,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:17,620 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:17,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:17,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:17,621 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:17,621 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:17,621 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:17,622 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:17,622 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:17,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:17,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:17,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:17,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:17,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:17,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:17,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:17,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:17,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:17,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:17,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:17,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:17,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:17,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:17,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:17,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:17,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:17,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:17,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:17,632 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:17,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:17,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:17,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:17,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:17,634 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_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98618c76bfa0eca070eb71a2130d02b24ef80e44 [2021-10-11 02:28:17,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:17,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:17,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:17,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:17,962 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:17,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2021-10-11 02:28:18,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/data/94310740a/b8a12cd183354e96b47079456bf22137/FLAGe6dad5774 [2021-10-11 02:28:18,864 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:18,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2021-10-11 02:28:18,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/data/94310740a/b8a12cd183354e96b47079456bf22137/FLAGe6dad5774 [2021-10-11 02:28:18,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/data/94310740a/b8a12cd183354e96b47079456bf22137 [2021-10-11 02:28:18,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:18,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:18,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:18,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:18,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:18,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a428389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:18, skipping insertion in model container [2021-10-11 02:28:18,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:18" (1/1) ... [2021-10-11 02:28:18,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:19,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:19,661 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/sv-benchmarks/c/eca-rers2012/Problem03_label29.c[58258,58271] [2021-10-11 02:28:19,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:19,710 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:20,022 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/sv-benchmarks/c/eca-rers2012/Problem03_label29.c[58258,58271] [2021-10-11 02:28:20,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:20,062 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:20,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20 WrapperNode [2021-10-11 02:28:20,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:20,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:20,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:20,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:20,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:20,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:20,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:20,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:20,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... [2021-10-11 02:28:20,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:20,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:20,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:20,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:20,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:24,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:24,615 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:24,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:24 BoogieIcfgContainer [2021-10-11 02:28:24,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:24,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:24,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:24,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:24,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:18" (1/3) ... [2021-10-11 02:28:24,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43482eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:24, skipping insertion in model container [2021-10-11 02:28:24,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:20" (2/3) ... [2021-10-11 02:28:24,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43482eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:24, skipping insertion in model container [2021-10-11 02:28:24,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:24" (3/3) ... [2021-10-11 02:28:24,628 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2021-10-11 02:28:24,646 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:24,650 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:24,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:24,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:24,694 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:24,694 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:24,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:24,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:24,695 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:24,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:24,695 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2021-10-11 02:28:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-11 02:28:24,754 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:24,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:24,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:24,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:24,767 INFO L82 PathProgramCache]: Analyzing trace with hash 466756442, now seen corresponding path program 1 times [2021-10-11 02:28:24,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:24,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469418987] [2021-10-11 02:28:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:25,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469418987] [2021-10-11 02:28:25,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:25,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:25,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021120864] [2021-10-11 02:28:25,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:25,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:25,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:25,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:25,691 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2021-10-11 02:28:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:27,121 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2021-10-11 02:28:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:27,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2021-10-11 02:28:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:27,146 INFO L225 Difference]: With dead ends: 440 [2021-10-11 02:28:27,153 INFO L226 Difference]: Without dead ends: 289 [2021-10-11 02:28:27,158 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 [2021-10-11 02:28:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-11 02:28:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-10-11 02:28:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2021-10-11 02:28:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 550 transitions. [2021-10-11 02:28:27,254 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 550 transitions. Word has length 143 [2021-10-11 02:28:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:27,256 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 550 transitions. [2021-10-11 02:28:27,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 550 transitions. [2021-10-11 02:28:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-11 02:28:27,271 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:27,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:27,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:27,273 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:27,277 INFO L82 PathProgramCache]: Analyzing trace with hash 865042910, now seen corresponding path program 1 times [2021-10-11 02:28:27,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:27,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774372828] [2021-10-11 02:28:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:27,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774372828] [2021-10-11 02:28:27,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:27,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:27,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372465284] [2021-10-11 02:28:27,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:27,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:27,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:27,440 INFO L87 Difference]: Start difference. First operand 289 states and 550 transitions. Second operand 3 states. [2021-10-11 02:28:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:28,609 INFO L93 Difference]: Finished difference Result 865 states and 1648 transitions. [2021-10-11 02:28:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:28,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2021-10-11 02:28:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:28,617 INFO L225 Difference]: With dead ends: 865 [2021-10-11 02:28:28,618 INFO L226 Difference]: Without dead ends: 577 [2021-10-11 02:28:28,621 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 [2021-10-11 02:28:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-10-11 02:28:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2021-10-11 02:28:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2021-10-11 02:28:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1011 transitions. [2021-10-11 02:28:28,713 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1011 transitions. Word has length 148 [2021-10-11 02:28:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:28,715 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1011 transitions. [2021-10-11 02:28:28,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1011 transitions. [2021-10-11 02:28:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-10-11 02:28:28,724 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:28,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:28,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:28,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:28,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1593799929, now seen corresponding path program 1 times [2021-10-11 02:28:28,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:28,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063764489] [2021-10-11 02:28:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:28,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063764489] [2021-10-11 02:28:28,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:28,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:28,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814158388] [2021-10-11 02:28:28,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:28,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:28,890 INFO L87 Difference]: Start difference. First operand 575 states and 1011 transitions. Second operand 3 states. [2021-10-11 02:28:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:30,033 INFO L93 Difference]: Finished difference Result 1721 states and 3030 transitions. [2021-10-11 02:28:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:30,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2021-10-11 02:28:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:30,042 INFO L225 Difference]: With dead ends: 1721 [2021-10-11 02:28:30,043 INFO L226 Difference]: Without dead ends: 1147 [2021-10-11 02:28:30,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:30,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-10-11 02:28:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2021-10-11 02:28:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2021-10-11 02:28:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1962 transitions. [2021-10-11 02:28:30,086 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1962 transitions. Word has length 151 [2021-10-11 02:28:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:30,087 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1962 transitions. [2021-10-11 02:28:30,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1962 transitions. [2021-10-11 02:28:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-11 02:28:30,092 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:30,093 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:30,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:30,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash 309759520, now seen corresponding path program 1 times [2021-10-11 02:28:30,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:30,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773964153] [2021-10-11 02:28:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:30,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773964153] [2021-10-11 02:28:30,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:30,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:30,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820097770] [2021-10-11 02:28:30,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:30,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:30,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:30,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:30,208 INFO L87 Difference]: Start difference. First operand 1147 states and 1962 transitions. Second operand 3 states. [2021-10-11 02:28:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:31,497 INFO L93 Difference]: Finished difference Result 3437 states and 5883 transitions. [2021-10-11 02:28:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:31,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2021-10-11 02:28:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:31,515 INFO L225 Difference]: With dead ends: 3437 [2021-10-11 02:28:31,515 INFO L226 Difference]: Without dead ends: 2291 [2021-10-11 02:28:31,518 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 [2021-10-11 02:28:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-10-11 02:28:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2021-10-11 02:28:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2021-10-11 02:28:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3562 transitions. [2021-10-11 02:28:31,601 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3562 transitions. Word has length 163 [2021-10-11 02:28:31,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:31,602 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3562 transitions. [2021-10-11 02:28:31,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3562 transitions. [2021-10-11 02:28:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-11 02:28:31,609 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:31,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:31,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:31,610 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:31,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1528495452, now seen corresponding path program 1 times [2021-10-11 02:28:31,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:31,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671076319] [2021-10-11 02:28:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:28:31,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671076319] [2021-10-11 02:28:31,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:31,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:31,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152756309] [2021-10-11 02:28:31,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:31,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:31,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:31,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:31,789 INFO L87 Difference]: Start difference. First operand 2291 states and 3562 transitions. Second operand 3 states. [2021-10-11 02:28:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:33,034 INFO L93 Difference]: Finished difference Result 5725 states and 8865 transitions. [2021-10-11 02:28:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:33,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2021-10-11 02:28:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:33,062 INFO L225 Difference]: With dead ends: 5725 [2021-10-11 02:28:33,062 INFO L226 Difference]: Without dead ends: 3435 [2021-10-11 02:28:33,066 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 [2021-10-11 02:28:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-10-11 02:28:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2021-10-11 02:28:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2021-10-11 02:28:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5290 transitions. [2021-10-11 02:28:33,194 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5290 transitions. Word has length 184 [2021-10-11 02:28:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:33,195 INFO L481 AbstractCegarLoop]: Abstraction has 3435 states and 5290 transitions. [2021-10-11 02:28:33,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5290 transitions. [2021-10-11 02:28:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-11 02:28:33,207 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:33,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:33,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:33,208 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2120178085, now seen corresponding path program 1 times [2021-10-11 02:28:33,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:33,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380297328] [2021-10-11 02:28:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:28:33,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380297328] [2021-10-11 02:28:33,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462903647] [2021-10-11 02:28:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:33,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:33,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-11 02:28:34,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-11 02:28:34,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:34,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:28:34,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363002878] [2021-10-11 02:28:34,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:34,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:34,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:34,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:34,528 INFO L87 Difference]: Start difference. First operand 3435 states and 5290 transitions. Second operand 3 states. [2021-10-11 02:28:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:35,826 INFO L93 Difference]: Finished difference Result 10158 states and 15646 transitions. [2021-10-11 02:28:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:35,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2021-10-11 02:28:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:35,883 INFO L225 Difference]: With dead ends: 10158 [2021-10-11 02:28:35,892 INFO L226 Difference]: Without dead ends: 6724 [2021-10-11 02:28:35,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6724 states. [2021-10-11 02:28:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 6724. [2021-10-11 02:28:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6724 states. [2021-10-11 02:28:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 10212 transitions. [2021-10-11 02:28:36,112 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 10212 transitions. Word has length 191 [2021-10-11 02:28:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:36,114 INFO L481 AbstractCegarLoop]: Abstraction has 6724 states and 10212 transitions. [2021-10-11 02:28:36,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 10212 transitions. [2021-10-11 02:28:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-10-11 02:28:36,136 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:36,137 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:36,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 02:28:36,353 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:36,354 INFO L82 PathProgramCache]: Analyzing trace with hash 851409454, now seen corresponding path program 1 times [2021-10-11 02:28:36,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:36,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521452798] [2021-10-11 02:28:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:36,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521452798] [2021-10-11 02:28:36,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:36,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:36,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866791856] [2021-10-11 02:28:36,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:36,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:36,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:36,614 INFO L87 Difference]: Start difference. First operand 6724 states and 10212 transitions. Second operand 3 states. [2021-10-11 02:28:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:37,861 INFO L93 Difference]: Finished difference Result 15735 states and 23935 transitions. [2021-10-11 02:28:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:37,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2021-10-11 02:28:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:37,924 INFO L225 Difference]: With dead ends: 15735 [2021-10-11 02:28:37,924 INFO L226 Difference]: Without dead ends: 9012 [2021-10-11 02:28:37,935 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 [2021-10-11 02:28:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2021-10-11 02:28:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 9012. [2021-10-11 02:28:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2021-10-11 02:28:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 13374 transitions. [2021-10-11 02:28:38,207 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 13374 transitions. Word has length 201 [2021-10-11 02:28:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:38,208 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 13374 transitions. [2021-10-11 02:28:38,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 13374 transitions. [2021-10-11 02:28:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-11 02:28:38,234 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:38,235 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:38,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:28:38,235 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:38,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash 612708956, now seen corresponding path program 1 times [2021-10-11 02:28:38,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:38,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320260337] [2021-10-11 02:28:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-11 02:28:38,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320260337] [2021-10-11 02:28:38,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:38,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:38,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081870049] [2021-10-11 02:28:38,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:38,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:38,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:38,455 INFO L87 Difference]: Start difference. First operand 9012 states and 13374 transitions. Second operand 3 states. [2021-10-11 02:28:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:39,752 INFO L93 Difference]: Finished difference Result 21598 states and 32147 transitions. [2021-10-11 02:28:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:39,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2021-10-11 02:28:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:39,809 INFO L225 Difference]: With dead ends: 21598 [2021-10-11 02:28:39,809 INFO L226 Difference]: Without dead ends: 12730 [2021-10-11 02:28:39,822 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 [2021-10-11 02:28:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12730 states. [2021-10-11 02:28:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12730 to 12730. [2021-10-11 02:28:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12730 states. [2021-10-11 02:28:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12730 states to 12730 states and 18035 transitions. [2021-10-11 02:28:40,223 INFO L78 Accepts]: Start accepts. Automaton has 12730 states and 18035 transitions. Word has length 204 [2021-10-11 02:28:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:40,224 INFO L481 AbstractCegarLoop]: Abstraction has 12730 states and 18035 transitions. [2021-10-11 02:28:40,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 12730 states and 18035 transitions. [2021-10-11 02:28:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-10-11 02:28:40,267 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:40,267 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:40,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:28:40,268 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1251556565, now seen corresponding path program 1 times [2021-10-11 02:28:40,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:40,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10273119] [2021-10-11 02:28:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:28:40,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10273119] [2021-10-11 02:28:40,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320677799] [2021-10-11 02:28:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:40,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:41,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:41,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:41,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:28:41,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398538466] [2021-10-11 02:28:41,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:41,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:41,456 INFO L87 Difference]: Start difference. First operand 12730 states and 18035 transitions. Second operand 3 states. [2021-10-11 02:28:42,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:42,817 INFO L93 Difference]: Finished difference Result 30035 states and 43131 transitions. [2021-10-11 02:28:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:42,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2021-10-11 02:28:42,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:42,864 INFO L225 Difference]: With dead ends: 30035 [2021-10-11 02:28:42,865 INFO L226 Difference]: Without dead ends: 17592 [2021-10-11 02:28:42,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17592 states. [2021-10-11 02:28:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17592 to 16162. [2021-10-11 02:28:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16162 states. [2021-10-11 02:28:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16162 states to 16162 states and 22406 transitions. [2021-10-11 02:28:43,345 INFO L78 Accepts]: Start accepts. Automaton has 16162 states and 22406 transitions. Word has length 252 [2021-10-11 02:28:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:43,346 INFO L481 AbstractCegarLoop]: Abstraction has 16162 states and 22406 transitions. [2021-10-11 02:28:43,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16162 states and 22406 transitions. [2021-10-11 02:28:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-10-11 02:28:43,386 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:43,386 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2021-10-11 02:28:43,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:43,609 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:43,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1784060870, now seen corresponding path program 1 times [2021-10-11 02:28:43,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:43,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500293118] [2021-10-11 02:28:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:43,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500293118] [2021-10-11 02:28:43,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:43,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:43,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251871625] [2021-10-11 02:28:43,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:43,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:43,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:43,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:43,968 INFO L87 Difference]: Start difference. First operand 16162 states and 22406 transitions. Second operand 3 states. [2021-10-11 02:28:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:45,412 INFO L93 Difference]: Finished difference Result 39330 states and 54303 transitions. [2021-10-11 02:28:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:45,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2021-10-11 02:28:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:45,475 INFO L225 Difference]: With dead ends: 39330 [2021-10-11 02:28:45,475 INFO L226 Difference]: Without dead ends: 23455 [2021-10-11 02:28:45,495 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 [2021-10-11 02:28:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23455 states. [2021-10-11 02:28:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23455 to 23169. [2021-10-11 02:28:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23169 states. [2021-10-11 02:28:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23169 states to 23169 states and 31083 transitions. [2021-10-11 02:28:45,958 INFO L78 Accepts]: Start accepts. Automaton has 23169 states and 31083 transitions. Word has length 267 [2021-10-11 02:28:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:45,959 INFO L481 AbstractCegarLoop]: Abstraction has 23169 states and 31083 transitions. [2021-10-11 02:28:45,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 23169 states and 31083 transitions. [2021-10-11 02:28:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-10-11 02:28:46,009 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:46,009 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2021-10-11 02:28:46,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:28:46,010 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1787562702, now seen corresponding path program 1 times [2021-10-11 02:28:46,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:46,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622732463] [2021-10-11 02:28:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-10-11 02:28:46,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622732463] [2021-10-11 02:28:46,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84942223] [2021-10-11 02:28:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:46,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:46,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-11 02:28:47,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-11 02:28:48,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:48,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2021-10-11 02:28:48,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262188534] [2021-10-11 02:28:48,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:48,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:48,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:48,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:48,020 INFO L87 Difference]: Start difference. First operand 23169 states and 31083 transitions. Second operand 4 states. [2021-10-11 02:28:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:49,961 INFO L93 Difference]: Finished difference Result 57205 states and 76969 transitions. [2021-10-11 02:28:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:49,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2021-10-11 02:28:49,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:50,049 INFO L225 Difference]: With dead ends: 57205 [2021-10-11 02:28:50,049 INFO L226 Difference]: Without dead ends: 34323 [2021-10-11 02:28:50,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34323 states. [2021-10-11 02:28:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34323 to 34323. [2021-10-11 02:28:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34323 states. [2021-10-11 02:28:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34323 states to 34323 states and 44810 transitions. [2021-10-11 02:28:50,997 INFO L78 Accepts]: Start accepts. Automaton has 34323 states and 44810 transitions. Word has length 269 [2021-10-11 02:28:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:50,998 INFO L481 AbstractCegarLoop]: Abstraction has 34323 states and 44810 transitions. [2021-10-11 02:28:50,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 34323 states and 44810 transitions. [2021-10-11 02:28:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-10-11 02:28:51,106 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:51,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2021-10-11 02:28:51,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:28:51,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:51,333 INFO L82 PathProgramCache]: Analyzing trace with hash 654379929, now seen corresponding path program 1 times [2021-10-11 02:28:51,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:51,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338958231] [2021-10-11 02:28:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:51,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338958231] [2021-10-11 02:28:51,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424352616] [2021-10-11 02:28:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:51,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:51,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:52,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:28:53,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:53,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2021-10-11 02:28:53,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648951787] [2021-10-11 02:28:53,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:53,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:53,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:53,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:53,096 INFO L87 Difference]: Start difference. First operand 34323 states and 44810 transitions. Second operand 4 states. [2021-10-11 02:28:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:54,873 INFO L93 Difference]: Finished difference Result 74935 states and 97871 transitions. [2021-10-11 02:28:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:55,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2021-10-11 02:28:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:55,039 INFO L225 Difference]: With dead ends: 74935 [2021-10-11 02:28:55,039 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:55,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:55,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:55,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2021-10-11 02:28:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:55,069 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:55,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:55,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:55,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:55,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:55,633 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 32 [2021-10-11 02:28:55,970 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 32 [2021-10-11 02:28:56,094 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-10-11 02:28:56,218 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2021-10-11 02:28:56,222 INFO L262 CegarLoopResult]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,223 INFO L262 CegarLoopResult]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,223 INFO L262 CegarLoopResult]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,223 INFO L262 CegarLoopResult]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,223 INFO L262 CegarLoopResult]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,224 INFO L262 CegarLoopResult]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,224 INFO L262 CegarLoopResult]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,224 INFO L262 CegarLoopResult]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,224 INFO L262 CegarLoopResult]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,225 INFO L262 CegarLoopResult]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,225 INFO L262 CegarLoopResult]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,225 INFO L262 CegarLoopResult]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,226 INFO L262 CegarLoopResult]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,226 INFO L262 CegarLoopResult]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,226 INFO L262 CegarLoopResult]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,226 INFO L262 CegarLoopResult]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,227 INFO L262 CegarLoopResult]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,227 INFO L262 CegarLoopResult]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,227 INFO L262 CegarLoopResult]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,227 INFO L262 CegarLoopResult]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,227 INFO L262 CegarLoopResult]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,228 INFO L262 CegarLoopResult]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,228 INFO L262 CegarLoopResult]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,228 INFO L262 CegarLoopResult]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,228 INFO L262 CegarLoopResult]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,228 INFO L262 CegarLoopResult]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,228 INFO L262 CegarLoopResult]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,229 INFO L262 CegarLoopResult]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,229 INFO L262 CegarLoopResult]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,229 INFO L262 CegarLoopResult]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,229 INFO L262 CegarLoopResult]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,229 INFO L262 CegarLoopResult]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,229 INFO L262 CegarLoopResult]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,230 INFO L262 CegarLoopResult]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,230 INFO L262 CegarLoopResult]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,230 INFO L262 CegarLoopResult]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,230 INFO L262 CegarLoopResult]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,230 INFO L262 CegarLoopResult]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,230 INFO L262 CegarLoopResult]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,231 INFO L262 CegarLoopResult]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,231 INFO L262 CegarLoopResult]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,231 INFO L262 CegarLoopResult]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,231 INFO L262 CegarLoopResult]: For program point L1575-1(lines 64 1660) no Hoare annotation was computed. [2021-10-11 02:28:56,231 INFO L262 CegarLoopResult]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,232 INFO L262 CegarLoopResult]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,232 INFO L262 CegarLoopResult]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,232 INFO L262 CegarLoopResult]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,233 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:56,233 INFO L262 CegarLoopResult]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,233 INFO L262 CegarLoopResult]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,233 INFO L262 CegarLoopResult]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,233 INFO L262 CegarLoopResult]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,234 INFO L262 CegarLoopResult]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,234 INFO L262 CegarLoopResult]: For program point L1578-1(lines 64 1660) no Hoare annotation was computed. [2021-10-11 02:28:56,234 INFO L262 CegarLoopResult]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,234 INFO L262 CegarLoopResult]: For program point L1579(line 1579) no Hoare annotation was computed. [2021-10-11 02:28:56,235 INFO L262 CegarLoopResult]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,235 INFO L262 CegarLoopResult]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,237 INFO L262 CegarLoopResult]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,238 INFO L262 CegarLoopResult]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,238 INFO L262 CegarLoopResult]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,238 INFO L262 CegarLoopResult]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,238 INFO L262 CegarLoopResult]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,238 INFO L262 CegarLoopResult]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,239 INFO L262 CegarLoopResult]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,239 INFO L262 CegarLoopResult]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,239 INFO L262 CegarLoopResult]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,239 INFO L262 CegarLoopResult]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,239 INFO L262 CegarLoopResult]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,240 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1579) no Hoare annotation was computed. [2021-10-11 02:28:56,240 INFO L262 CegarLoopResult]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,241 INFO L262 CegarLoopResult]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,241 INFO L262 CegarLoopResult]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,241 INFO L262 CegarLoopResult]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,241 INFO L262 CegarLoopResult]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,241 INFO L262 CegarLoopResult]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,241 INFO L262 CegarLoopResult]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,242 INFO L262 CegarLoopResult]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,242 INFO L262 CegarLoopResult]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,242 INFO L262 CegarLoopResult]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,242 INFO L262 CegarLoopResult]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,242 INFO L262 CegarLoopResult]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,242 INFO L262 CegarLoopResult]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,243 INFO L262 CegarLoopResult]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,243 INFO L262 CegarLoopResult]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,243 INFO L262 CegarLoopResult]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,245 INFO L258 CegarLoopResult]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse0 (= ~a27~0 1)) (.cse3 (= ~a11~0 1))) (let ((.cse2 (= ~a12~0 1)) (.cse1 (or .cse0 .cse3))) (or (and .cse0 (= ~a11~0 0)) (and (= ~a6~0 0) (<= ~a26~0 0) .cse1) (<= 1 ~a3~0) (and .cse2 (= ~a27~0 0)) (and .cse2 (= ~a26~0 1) .cse1) .cse3 (= ~a6~0 1) (and .cse0 (= ~a12~0 0)) (and (= ~a5~0 1) .cse1)))) [2021-10-11 02:28:56,245 INFO L262 CegarLoopResult]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,246 INFO L262 CegarLoopResult]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,246 INFO L262 CegarLoopResult]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,246 INFO L262 CegarLoopResult]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,246 INFO L265 CegarLoopResult]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2021-10-11 02:28:56,246 INFO L262 CegarLoopResult]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,247 INFO L262 CegarLoopResult]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,247 INFO L262 CegarLoopResult]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,247 INFO L262 CegarLoopResult]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,247 INFO L262 CegarLoopResult]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,247 INFO L262 CegarLoopResult]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,247 INFO L262 CegarLoopResult]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,248 INFO L262 CegarLoopResult]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,248 INFO L262 CegarLoopResult]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,248 INFO L262 CegarLoopResult]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,248 INFO L262 CegarLoopResult]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,248 INFO L262 CegarLoopResult]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,249 INFO L262 CegarLoopResult]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,249 INFO L262 CegarLoopResult]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,250 INFO L258 CegarLoopResult]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse0 (= ~a27~0 1)) (.cse3 (= ~a11~0 1))) (let ((.cse2 (= ~a12~0 1)) (.cse1 (or .cse0 .cse3))) (or (and .cse0 (= ~a11~0 0)) (and (= ~a6~0 0) (<= ~a26~0 0) .cse1) (<= 1 ~a3~0) (and .cse2 (= ~a27~0 0)) (and .cse2 (= ~a26~0 1) .cse1) .cse3 (= ~a6~0 1) (and .cse0 (= ~a12~0 0)) (and (= ~a5~0 1) .cse1)))) [2021-10-11 02:28:56,250 INFO L262 CegarLoopResult]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,250 INFO L262 CegarLoopResult]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,250 INFO L262 CegarLoopResult]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,250 INFO L262 CegarLoopResult]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,250 INFO L262 CegarLoopResult]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,251 INFO L262 CegarLoopResult]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,251 INFO L262 CegarLoopResult]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,251 INFO L262 CegarLoopResult]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,251 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:56,251 INFO L262 CegarLoopResult]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,251 INFO L262 CegarLoopResult]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,252 INFO L262 CegarLoopResult]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,252 INFO L262 CegarLoopResult]: For program point L1673(line 1673) no Hoare annotation was computed. [2021-10-11 02:28:56,252 INFO L262 CegarLoopResult]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,252 INFO L262 CegarLoopResult]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,252 INFO L262 CegarLoopResult]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,252 INFO L262 CegarLoopResult]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,253 INFO L262 CegarLoopResult]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,254 INFO L262 CegarLoopResult]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,254 INFO L262 CegarLoopResult]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,254 INFO L262 CegarLoopResult]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,254 INFO L262 CegarLoopResult]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,254 INFO L262 CegarLoopResult]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,254 INFO L262 CegarLoopResult]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,255 INFO L262 CegarLoopResult]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,256 INFO L262 CegarLoopResult]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,256 INFO L262 CegarLoopResult]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,256 INFO L262 CegarLoopResult]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,256 INFO L262 CegarLoopResult]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2021-10-11 02:28:56,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:56 BoogieIcfgContainer [2021-10-11 02:28:56,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:56,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:56,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:56,295 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:56,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:24" (3/4) ... [2021-10-11 02:28:56,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:56,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2021-10-11 02:28:56,351 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:28:56,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:28:56,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:28:56,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c59c52e-e1b7-481b-8642-c603f9014721/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:56,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:56,716 INFO L168 Benchmark]: Toolchain (without parser) took 37777.20 ms. Allocated memory was 92.3 MB in the beginning and 1.7 GB in the end (delta: 1.7 GB). Free memory was 64.8 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 460.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,716 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:56,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1124.32 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 71.1 kB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.00 ms. Allocated memory is still 111.1 MB. Free memory was 64.5 MB in the beginning and 50.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,718 INFO L168 Benchmark]: Boogie Preprocessor took 171.49 ms. Allocated memory is still 111.1 MB. Free memory was 50.0 MB in the beginning and 62.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,718 INFO L168 Benchmark]: RCFGBuilder took 4208.66 ms. Allocated memory was 111.1 MB in the beginning and 228.6 MB in the end (delta: 117.4 MB). Free memory was 62.6 MB in the beginning and 71.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 107.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,719 INFO L168 Benchmark]: TraceAbstraction took 31673.56 ms. Allocated memory was 228.6 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 70.7 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 292.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,719 INFO L168 Benchmark]: Witness Printer took 420.42 ms. Allocated memory is still 1.7 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:56,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1124.32 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 71.1 kB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 171.00 ms. Allocated memory is still 111.1 MB. Free memory was 64.5 MB in the beginning and 50.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 171.49 ms. Allocated memory is still 111.1 MB. Free memory was 50.0 MB in the beginning and 62.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4208.66 ms. Allocated memory was 111.1 MB in the beginning and 228.6 MB in the end (delta: 117.4 MB). Free memory was 62.6 MB in the beginning and 71.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 107.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31673.56 ms. Allocated memory was 228.6 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 70.7 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 292.5 MB. Max. memory is 16.1 GB. * Witness Printer took 420.42 ms. Allocated memory is still 1.7 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1579]: 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: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((((a27 == 1 && a11 == 0) || ((a6 == 0 && a26 <= 0) && (a27 == 1 || a11 == 1))) || 1 <= a3) || (a12 == 1 && a27 == 0)) || ((a12 == 1 && a26 == 1) && (a27 == 1 || a11 == 1))) || a11 == 1) || a6 == 1) || (a27 == 1 && a12 == 0)) || (a5 == 1 && (a27 == 1 || a11 == 1)) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((((a27 == 1 && a11 == 0) || ((a6 == 0 && a26 <= 0) && (a27 == 1 || a11 == 1))) || 1 <= a3) || (a12 == 1 && a27 == 0)) || ((a12 == 1 && a26 == 1) && (a27 == 1 || a11 == 1))) || a11 == 1) || a6 == 1) || (a27 == 1 && a12 == 0)) || (a5 == 1 && (a27 == 1 || a11 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.5s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1305 SDtfs, 1085 SDslu, 67 SDs, 0 SdLazy, 6206 SolverSat, 1673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1994 GetRequests, 1971 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34323occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 1718 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 577 NumberOfFragments, 141 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19470 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 3 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 3433 NumberOfCodeBlocks, 3433 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4399 ConstructedInterpolants, 0 QuantifiedInterpolants, 3486435 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2028 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 1954/1978 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...