./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label26.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0625600491f7606c1783d92f1f76e95d9592d51f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:05:36,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:05:36,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:05:36,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:05:36,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:05:36,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:05:36,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:05:36,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:05:36,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:05:36,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:05:36,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:05:36,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:05:36,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:05:36,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:05:36,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:05:36,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:05:36,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:05:36,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:05:36,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:05:36,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:05:36,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:05:36,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:05:36,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:05:36,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:05:36,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:05:36,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:05:36,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:05:36,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:05:36,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:05:36,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:05:36,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:05:36,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:05:36,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:05:36,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:05:36,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:05:36,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:05:36,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:05:36,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:05:36,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:05:36,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:05:36,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:05:36,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:05:36,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:05:36,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:05:36,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:05:36,562 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:05:36,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:05:36,562 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:05:36,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:05:36,562 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:05:36,562 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:05:36,562 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:05:36,563 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:05:36,563 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:05:36,563 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:05:36,563 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:05:36,563 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:05:36,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:05:36,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:05:36,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:05:36,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:05:36,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:05:36,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:05:36,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:05:36,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:05:36,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:05:36,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:05:36,566 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0625600491f7606c1783d92f1f76e95d9592d51f [2020-12-09 06:05:36,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:05:36,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:05:36,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:05:36,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:05:36,760 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:05:36,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label26.c [2020-12-09 06:05:36,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/data/192d54914/19fd05a81e9b4b13828fd717c289fd08/FLAG9726d96e7 [2020-12-09 06:05:37,224 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:05:37,224 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/sv-benchmarks/c/eca-rers2012/Problem02_label26.c [2020-12-09 06:05:37,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/data/192d54914/19fd05a81e9b4b13828fd717c289fd08/FLAG9726d96e7 [2020-12-09 06:05:37,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/data/192d54914/19fd05a81e9b4b13828fd717c289fd08 [2020-12-09 06:05:37,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:05:37,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:05:37,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:05:37,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:05:37,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:05:37,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33210a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37, skipping insertion in model container [2020-12-09 06:05:37,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:05:37,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:05:37,542 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/sv-benchmarks/c/eca-rers2012/Problem02_label26.c[20881,20894] [2020-12-09 06:05:37,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:05:37,559 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:05:37,620 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/sv-benchmarks/c/eca-rers2012/Problem02_label26.c[20881,20894] [2020-12-09 06:05:37,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:05:37,635 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:05:37,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37 WrapperNode [2020-12-09 06:05:37,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:05:37,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:05:37,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:05:37,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:05:37,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:05:37,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:05:37,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:05:37,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:05:37,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... [2020-12-09 06:05:37,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:05:37,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:05:37,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:05:37,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:05:37,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:05:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:05:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:05:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:05:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:05:39,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:05:39,074 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:05:39,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:05:39 BoogieIcfgContainer [2020-12-09 06:05:39,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:05:39,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:05:39,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:05:39,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:05:39,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:05:37" (1/3) ... [2020-12-09 06:05:39,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da5cbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:05:39, skipping insertion in model container [2020-12-09 06:05:39,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:05:37" (2/3) ... [2020-12-09 06:05:39,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da5cbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:05:39, skipping insertion in model container [2020-12-09 06:05:39,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:05:39" (3/3) ... [2020-12-09 06:05:39,084 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label26.c [2020-12-09 06:05:39,094 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:05:39,097 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:05:39,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:05:39,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:05:39,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:05:39,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:05:39,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:05:39,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:05:39,122 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:05:39,122 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:05:39,122 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:05:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 06:05:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 06:05:39,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:39,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:39,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:39,142 INFO L82 PathProgramCache]: Analyzing trace with hash 925962511, now seen corresponding path program 1 times [2020-12-09 06:05:39,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:39,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813009213] [2020-12-09 06:05:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:39,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813009213] [2020-12-09 06:05:39,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:39,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:05:39,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959193126] [2020-12-09 06:05:39,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:39,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:39,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:39,403 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 06:05:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:39,745 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 06:05:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:39,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 06:05:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:39,755 INFO L225 Difference]: With dead ends: 251 [2020-12-09 06:05:39,755 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 06:05:39,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 06:05:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 06:05:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 06:05:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-12-09 06:05:39,794 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-12-09 06:05:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:39,794 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-12-09 06:05:39,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-12-09 06:05:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-09 06:05:39,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:39,798 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] [2020-12-09 06:05:39,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:05:39,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:39,799 INFO L82 PathProgramCache]: Analyzing trace with hash -859409176, now seen corresponding path program 1 times [2020-12-09 06:05:39,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:39,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004671479] [2020-12-09 06:05:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 06:05:39,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004671479] [2020-12-09 06:05:39,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:39,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:05:39,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491927578] [2020-12-09 06:05:39,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:39,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:39,901 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-12-09 06:05:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:40,220 INFO L93 Difference]: Finished difference Result 325 states and 505 transitions. [2020-12-09 06:05:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:40,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-09 06:05:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:40,223 INFO L225 Difference]: With dead ends: 325 [2020-12-09 06:05:40,224 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 06:05:40,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 06:05:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-12-09 06:05:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 06:05:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 408 transitions. [2020-12-09 06:05:40,239 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 408 transitions. Word has length 85 [2020-12-09 06:05:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:40,239 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 408 transitions. [2020-12-09 06:05:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 408 transitions. [2020-12-09 06:05:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 06:05:40,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:40,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:40,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:05:40,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1427734697, now seen corresponding path program 1 times [2020-12-09 06:05:40,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:40,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790167111] [2020-12-09 06:05:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:40,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790167111] [2020-12-09 06:05:40,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:40,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:05:40,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591131831] [2020-12-09 06:05:40,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:40,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:40,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:40,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:40,290 INFO L87 Difference]: Start difference. First operand 243 states and 408 transitions. Second operand 3 states. [2020-12-09 06:05:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:40,433 INFO L93 Difference]: Finished difference Result 485 states and 815 transitions. [2020-12-09 06:05:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:40,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 06:05:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:40,435 INFO L225 Difference]: With dead ends: 485 [2020-12-09 06:05:40,435 INFO L226 Difference]: Without dead ends: 243 [2020-12-09 06:05:40,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-09 06:05:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-12-09 06:05:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 06:05:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-12-09 06:05:40,446 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 91 [2020-12-09 06:05:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:40,446 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-12-09 06:05:40,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-12-09 06:05:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 06:05:40,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:40,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:40,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:05:40,449 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:40,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:40,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2134420153, now seen corresponding path program 1 times [2020-12-09 06:05:40,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:40,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916872179] [2020-12-09 06:05:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:40,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916872179] [2020-12-09 06:05:40,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:40,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:05:40,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883144647] [2020-12-09 06:05:40,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:40,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:40,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:40,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:40,506 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-12-09 06:05:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:40,731 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-12-09 06:05:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:40,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 06:05:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:40,733 INFO L225 Difference]: With dead ends: 565 [2020-12-09 06:05:40,733 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 06:05:40,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 06:05:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 06:05:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 06:05:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-12-09 06:05:40,743 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-12-09 06:05:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:40,743 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-12-09 06:05:40,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-12-09 06:05:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 06:05:40,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:40,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:40,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:05:40,745 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2118162671, now seen corresponding path program 1 times [2020-12-09 06:05:40,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:40,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078427420] [2020-12-09 06:05:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:05:40,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078427420] [2020-12-09 06:05:40,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358728161] [2020-12-09 06:05:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:40,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:05:40,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:05:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 06:05:41,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:05:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 06:05:41,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:05:41,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 06:05:41,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073050267] [2020-12-09 06:05:41,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:41,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:41,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:05:41,178 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-12-09 06:05:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:41,461 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-12-09 06:05:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:41,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 06:05:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:41,465 INFO L225 Difference]: With dead ends: 885 [2020-12-09 06:05:41,465 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 06:05:41,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:05:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 06:05:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-12-09 06:05:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 06:05:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2020-12-09 06:05:41,479 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2020-12-09 06:05:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:41,479 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2020-12-09 06:05:41,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2020-12-09 06:05:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 06:05:41,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:41,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:41,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:41,683 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash -440291749, now seen corresponding path program 1 times [2020-12-09 06:05:41,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:41,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046656583] [2020-12-09 06:05:41,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 06:05:41,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046656583] [2020-12-09 06:05:41,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:41,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:05:41,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015178215] [2020-12-09 06:05:41,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:41,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:41,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:41,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:41,777 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2020-12-09 06:05:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:42,023 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2020-12-09 06:05:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:42,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 06:05:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:42,028 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 06:05:42,028 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 06:05:42,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 06:05:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 06:05:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 06:05:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2020-12-09 06:05:42,047 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2020-12-09 06:05:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:42,047 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2020-12-09 06:05:42,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2020-12-09 06:05:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-09 06:05:42,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:42,050 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-12-09 06:05:42,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:05:42,051 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:42,051 INFO L82 PathProgramCache]: Analyzing trace with hash 964830458, now seen corresponding path program 1 times [2020-12-09 06:05:42,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:42,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328638229] [2020-12-09 06:05:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 06:05:42,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328638229] [2020-12-09 06:05:42,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:05:42,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:05:42,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640344406] [2020-12-09 06:05:42,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:42,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:42,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:42,128 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2020-12-09 06:05:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:42,396 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2020-12-09 06:05:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:42,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-09 06:05:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:42,399 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 06:05:42,399 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 06:05:42,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:05:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 06:05:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-12-09 06:05:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 06:05:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2020-12-09 06:05:42,412 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2020-12-09 06:05:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:42,412 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2020-12-09 06:05:42,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2020-12-09 06:05:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 06:05:42,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:42,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 06:05:42,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:05:42,415 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:42,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1743236845, now seen corresponding path program 1 times [2020-12-09 06:05:42,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:42,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280791884] [2020-12-09 06:05:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 06:05:42,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280791884] [2020-12-09 06:05:42,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575588322] [2020-12-09 06:05:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:42,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:05:42,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:05:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-09 06:05:42,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:05:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-09 06:05:42,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:05:42,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 06:05:42,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225019516] [2020-12-09 06:05:42,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:42,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:42,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:05:42,791 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2020-12-09 06:05:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:43,051 INFO L93 Difference]: Finished difference Result 1767 states and 2112 transitions. [2020-12-09 06:05:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:43,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-12-09 06:05:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:43,056 INFO L225 Difference]: With dead ends: 1767 [2020-12-09 06:05:43,056 INFO L226 Difference]: Without dead ends: 1125 [2020-12-09 06:05:43,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:05:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-12-09 06:05:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 963. [2020-12-09 06:05:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 06:05:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1143 transitions. [2020-12-09 06:05:43,074 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1143 transitions. Word has length 181 [2020-12-09 06:05:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:43,074 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1143 transitions. [2020-12-09 06:05:43,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1143 transitions. [2020-12-09 06:05:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-12-09 06:05:43,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:43,076 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 06:05:43,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:43,277 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash -541399672, now seen corresponding path program 1 times [2020-12-09 06:05:43,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:43,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481631537] [2020-12-09 06:05:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-12-09 06:05:43,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481631537] [2020-12-09 06:05:43,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791449589] [2020-12-09 06:05:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:43,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:05:43,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:05:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 06:05:43,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:05:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 06:05:43,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:05:43,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 06:05:43,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106184475] [2020-12-09 06:05:43,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:05:43,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:05:43,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:05:43,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:05:43,617 INFO L87 Difference]: Start difference. First operand 963 states and 1143 transitions. Second operand 3 states. [2020-12-09 06:05:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:05:43,843 INFO L93 Difference]: Finished difference Result 2085 states and 2516 transitions. [2020-12-09 06:05:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:05:43,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2020-12-09 06:05:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:05:43,849 INFO L225 Difference]: With dead ends: 2085 [2020-12-09 06:05:43,849 INFO L226 Difference]: Without dead ends: 1203 [2020-12-09 06:05:43,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:05:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-12-09 06:05:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 963. [2020-12-09 06:05:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 06:05:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1149 transitions. [2020-12-09 06:05:43,866 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1149 transitions. Word has length 185 [2020-12-09 06:05:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:05:43,866 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1149 transitions. [2020-12-09 06:05:43,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:05:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1149 transitions. [2020-12-09 06:05:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-09 06:05:43,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:05:43,869 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:05:44,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:44,069 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:05:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:05:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -675765511, now seen corresponding path program 1 times [2020-12-09 06:05:44,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:05:44,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329921536] [2020-12-09 06:05:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:05:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 06:05:44,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329921536] [2020-12-09 06:05:44,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972569820] [2020-12-09 06:05:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:05:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:05:44,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:05:44,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:05:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 06:05:44,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:05:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 06:05:44,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402206006] [2020-12-09 06:05:44,534 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 06:05:44,534 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:05:44,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:05:44,541 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:05:44,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:05:53,060 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-12-09 06:05:53,185 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-12-09 06:05:53,410 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:53,599 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:53,837 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:54,024 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:54,320 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 165 [2020-12-09 06:05:54,508 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:54,708 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:54,895 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:55,098 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-12-09 06:05:58,059 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-12-09 06:05:58,181 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-12-09 06:05:58,415 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:58,604 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:58,840 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:59,030 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:59,324 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 165 [2020-12-09 06:05:59,511 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:59,708 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:05:59,895 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-12-09 06:06:03,498 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2020-12-09 06:06:03,712 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 11792 conjuctions. This might take some time... [2020-12-09 06:06:03,917 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 124 conjuctions. [2020-12-09 06:06:03,921 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2020-12-09 06:06:04,104 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 11792 conjuctions. This might take some time... [2020-12-09 06:06:04,316 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 124 conjuctions. [2020-12-09 06:06:04,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 57 [2020-12-09 06:06:04,559 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 11792 conjuctions. This might take some time... [2020-12-09 06:06:04,764 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 124 conjuctions. [2020-12-09 06:06:08,136 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 06:06:08,373 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2020-12-09 06:06:08,524 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-12-09 06:06:08,809 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-12-09 06:06:09,001 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-12-09 06:06:09,231 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-12-09 06:06:09,584 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-12-09 06:06:10,156 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-12-09 06:06:16,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:06:16,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 06:06:16,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2020-12-09 06:06:16,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063961762] [2020-12-09 06:06:16,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 06:06:16,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:06:16,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 06:06:16,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-09 06:06:16,155 INFO L87 Difference]: Start difference. First operand 963 states and 1149 transitions. Second operand 8 states. [2020-12-09 06:06:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:06:16,865 INFO L93 Difference]: Finished difference Result 2442 states and 2875 transitions. [2020-12-09 06:06:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 06:06:16,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-12-09 06:06:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:06:16,866 INFO L225 Difference]: With dead ends: 2442 [2020-12-09 06:06:16,866 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:06:16,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 412 SyntacticMatches, 151 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-12-09 06:06:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:06:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:06:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:06:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:06:16,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 192 [2020-12-09 06:06:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:06:16,869 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:06:16,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 06:06:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:06:16,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:06:17,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:06:17,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 06:06:17,291 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L586-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 06:06:17,292 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 590) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 06:06:17,293 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse6 (<= ~a28~0 7)) (.cse4 (<= ~a19~0 0)) (.cse8 (<= 9 ~a28~0)) (.cse7 (= ~a11~0 1)) (.cse5 (<= ~a17~0 7)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse3 .cse5) (and .cse0 .cse6 .cse5) (and .cse0 (= ~a21~0 1) .cse1 (= ~a25~0 1) (not .cse7) .cse2 (= ~a28~0 11)) (and .cse1 .cse6 .cse2) (and .cse4 .cse8 .cse2 .cse3) (and .cse8 .cse7 .cse5 .cse3) (and .cse1 .cse2 (<= ~a25~0 0) .cse3))) [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 06:06:17,294 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse6 (<= ~a28~0 7)) (.cse4 (<= ~a19~0 0)) (.cse8 (<= 9 ~a28~0)) (.cse7 (= ~a11~0 1)) (.cse5 (<= ~a17~0 7)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse3 .cse5) (and .cse0 .cse6 .cse5) (and .cse0 (= ~a21~0 1) .cse1 (= ~a25~0 1) (not .cse7) .cse2 (= ~a28~0 11)) (and .cse1 .cse6 .cse2) (and .cse4 .cse8 .cse2 .cse3) (and .cse8 .cse7 .cse5 .cse3) (and .cse1 .cse2 (<= ~a25~0 0) .cse3))) [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 06:06:17,295 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 06:06:17,296 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 06:06:17,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:06:17 BoogieIcfgContainer [2020-12-09 06:06:17,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:06:17,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:06:17,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:06:17,309 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:06:17,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:05:39" (3/4) ... [2020-12-09 06:06:17,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:06:17,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 06:06:17,328 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 06:06:17,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 06:06:17,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 06:06:17,407 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9817c37b-f686-4924-9c87-0090775c1e33/bin/utaipan/witness.graphml [2020-12-09 06:06:17,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:06:17,408 INFO L168 Benchmark]: Toolchain (without parser) took 40156.59 ms. Allocated memory was 86.0 MB in the beginning and 513.8 MB in the end (delta: 427.8 MB). Free memory was 62.7 MB in the beginning and 350.5 MB in the end (delta: -287.8 MB). Peak memory consumption was 140.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,408 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 60.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:06:17,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.02 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 58.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.09 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 53.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,409 INFO L168 Benchmark]: Boogie Preprocessor took 42.75 ms. Allocated memory is still 86.0 MB. Free memory was 53.3 MB in the beginning and 48.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,409 INFO L168 Benchmark]: RCFGBuilder took 1343.55 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 48.7 MB in the beginning and 75.4 MB in the end (delta: -26.7 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,409 INFO L168 Benchmark]: TraceAbstraction took 38230.93 ms. Allocated memory was 132.1 MB in the beginning and 513.8 MB in the end (delta: 381.7 MB). Free memory was 74.4 MB in the beginning and 365.2 MB in the end (delta: -290.8 MB). Peak memory consumption was 90.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,410 INFO L168 Benchmark]: Witness Printer took 98.11 ms. Allocated memory is still 513.8 MB. Free memory was 365.2 MB in the beginning and 350.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:06:17,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 60.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.02 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 58.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.09 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 53.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.75 ms. Allocated memory is still 86.0 MB. Free memory was 53.3 MB in the beginning and 48.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1343.55 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 48.7 MB in the beginning and 75.4 MB in the end (delta: -26.7 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38230.93 ms. Allocated memory was 132.1 MB in the beginning and 513.8 MB in the end (delta: 381.7 MB). Free memory was 74.4 MB in the beginning and 365.2 MB in the end (delta: -290.8 MB). Peak memory consumption was 90.9 MB. Max. memory is 16.1 GB. * Witness Printer took 98.11 ms. Allocated memory is still 513.8 MB. Free memory was 365.2 MB in the beginning and 350.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 590]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((a19 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a28 <= 10) && a17 <= 7)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((((((a19 == 1 && a21 == 1) && 8 <= a17) && a25 == 1) && !(a11 == 1)) && a17 <= 8) && a28 == 11)) || ((8 <= a17 && a28 <= 7) && a17 <= 8)) || (((a19 <= 0 && 9 <= a28) && a17 <= 8) && a28 <= 10)) || (((9 <= a28 && a11 == 1) && a17 <= 7) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a25 <= 0) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((a19 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 10) || ((a19 <= 0 && a28 <= 10) && a17 <= 7)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((((((a19 == 1 && a21 == 1) && 8 <= a17) && a25 == 1) && !(a11 == 1)) && a17 <= 8) && a28 == 11)) || ((8 <= a17 && a28 <= 7) && a17 <= 8)) || (((a19 <= 0 && 9 <= a28) && a17 <= 8) && a28 <= 10)) || (((9 <= a28 && a11 == 1) && a17 <= 7) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a25 <= 0) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.9s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 596 SDtfs, 917 SDslu, 83 SDs, 0 SdLazy, 3049 SolverSat, 648 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1550 GetRequests, 1357 SyntacticMatches, 154 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 642 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 213 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2192 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 240 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1971 NumberOfCodeBlocks, 1971 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2618 ConstructedInterpolants, 0 QuantifiedInterpolants, 1010853 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1547 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 1499/1752 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...