./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.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_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c -s /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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 4b4d92197dfffdd027bb5d3ff3dbfa8e4eded7a5 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:14:36,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:14:36,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:14:36,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:14:36,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:14:36,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:14:36,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:14:36,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:14:36,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:14:36,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:14:36,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:14:36,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:14:36,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:14:36,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:14:36,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:14:36,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:14:36,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:14:36,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:14:36,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:14:36,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:14:36,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:14:36,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:14:36,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:14:36,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:14:36,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:14:36,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:14:36,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:14:36,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:14:36,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:14:36,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:14:36,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:14:36,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:14:36,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:14:36,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:14:36,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:14:36,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:14:36,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:14:36,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:14:36,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:14:36,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:14:36,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:14:36,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:14:36,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:14:36,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:14:36,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:14:36,659 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:14:36,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:14:36,659 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:14:36,659 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:14:36,660 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:14:36,660 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:14:36,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:14:36,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:14:36,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:14:36,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:14:36,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:14:36,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:14:36,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:14:36,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:14:36,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:14:36,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:14:36,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:14:36,663 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_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b4d92197dfffdd027bb5d3ff3dbfa8e4eded7a5 [2020-12-09 20:14:36,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:14:36,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:14:36,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:14:36,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:14:36,846 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:14:36,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2020-12-09 20:14:36,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/data/0d4103532/a50fb00e5f684c24bdbd10c09054e3f8/FLAGe009d12ce [2020-12-09 20:14:37,315 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:14:37,316 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/sv-benchmarks/c/eca-rers2012/Problem02_label41.c [2020-12-09 20:14:37,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/data/0d4103532/a50fb00e5f684c24bdbd10c09054e3f8/FLAGe009d12ce [2020-12-09 20:14:37,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/data/0d4103532/a50fb00e5f684c24bdbd10c09054e3f8 [2020-12-09 20:14:37,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:14:37,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:14:37,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:14:37,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:14:37,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:14:37,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f05c74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37, skipping insertion in model container [2020-12-09 20:14:37,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:14:37,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:14:37,568 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_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2020-12-09 20:14:37,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:14:37,600 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:14:37,664 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_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/sv-benchmarks/c/eca-rers2012/Problem02_label41.c[15650,15663] [2020-12-09 20:14:37,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:14:37,696 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:14:37,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37 WrapperNode [2020-12-09 20:14:37,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:14:37,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:14:37,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:14:37,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:14:37,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:14:37,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:14:37,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:14:37,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:14:37,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... [2020-12-09 20:14:37,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:14:37,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:14:37,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:14:37,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:14:37,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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 20:14:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:14:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:14:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:14:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:14:39,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:14:39,140 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 20:14:39,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:14:39 BoogieIcfgContainer [2020-12-09 20:14:39,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:14:39,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:14:39,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:14:39,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:14:39,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:14:37" (1/3) ... [2020-12-09 20:14:39,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b04461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:14:39, skipping insertion in model container [2020-12-09 20:14:39,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:14:37" (2/3) ... [2020-12-09 20:14:39,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b04461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:14:39, skipping insertion in model container [2020-12-09 20:14:39,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:14:39" (3/3) ... [2020-12-09 20:14:39,148 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-12-09 20:14:39,158 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:14:39,160 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:14:39,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:14:39,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:14:39,184 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:14:39,184 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:14:39,184 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:14:39,185 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:14:39,185 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:14:39,185 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:14:39,185 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:14:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 20:14:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 20:14:39,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:39,201 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 20:14:39,201 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash 925942086, now seen corresponding path program 1 times [2020-12-09 20:14:39,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:39,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386454518] [2020-12-09 20:14:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:39,460 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 20:14:39,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386454518] [2020-12-09 20:14:39,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:39,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:14:39,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198935492] [2020-12-09 20:14:39,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:39,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:39,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:39,479 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 20:14:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:39,819 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 20:14:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:39,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 20:14:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:39,829 INFO L225 Difference]: With dead ends: 251 [2020-12-09 20:14:39,830 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 20:14:39,832 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 20:14:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 20:14:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 20:14:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 20:14:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 20:14:39,869 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 20:14:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:39,870 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 20:14:39,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 20:14:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 20:14:39,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:39,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:39,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:14:39,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1028662843, now seen corresponding path program 1 times [2020-12-09 20:14:39,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:39,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807373750] [2020-12-09 20:14:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:39,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807373750] [2020-12-09 20:14:39,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:39,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:14:39,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831639094] [2020-12-09 20:14:39,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:39,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:39,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:39,934 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 20:14:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:40,207 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 20:14:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:40,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 20:14:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:40,210 INFO L225 Difference]: With dead ends: 485 [2020-12-09 20:14:40,210 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 20:14:40,212 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 20:14:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 20:14:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 20:14:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 20:14:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-12-09 20:14:40,233 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-12-09 20:14:40,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:40,233 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-12-09 20:14:40,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-12-09 20:14:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 20:14:40,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:40,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:40,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:14:40,237 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2137912724, now seen corresponding path program 1 times [2020-12-09 20:14:40,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:40,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848393136] [2020-12-09 20:14:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:40,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848393136] [2020-12-09 20:14:40,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934889154] [2020-12-09 20:14:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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 20:14:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:40,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:14:40,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:14:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 20:14:40,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:14:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 20:14:40,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:14:40,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 20:14:40,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150756700] [2020-12-09 20:14:40,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:40,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:40,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:40,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:14:40,513 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-12-09 20:14:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:40,797 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2020-12-09 20:14:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:40,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 20:14:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:40,800 INFO L225 Difference]: With dead ends: 805 [2020-12-09 20:14:40,801 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 20:14:40,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 20:14:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 20:14:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 20:14:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 20:14:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 738 transitions. [2020-12-09 20:14:40,820 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 738 transitions. Word has length 89 [2020-12-09 20:14:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:40,820 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 738 transitions. [2020-12-09 20:14:40,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 738 transitions. [2020-12-09 20:14:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 20:14:40,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:40,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:41,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 20:14:41,023 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:41,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2138502470, now seen corresponding path program 1 times [2020-12-09 20:14:41,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:41,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222481243] [2020-12-09 20:14:41,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-09 20:14:41,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222481243] [2020-12-09 20:14:41,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292321186] [2020-12-09 20:14:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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 20:14:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:41,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:14:41,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:14:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 20:14:41,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:14:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 20:14:41,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:14:41,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 20:14:41,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723624325] [2020-12-09 20:14:41,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:41,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:41,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:41,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:14:41,326 INFO L87 Difference]: Start difference. First operand 483 states and 738 transitions. Second operand 3 states. [2020-12-09 20:14:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:41,615 INFO L93 Difference]: Finished difference Result 1205 states and 1881 transitions. [2020-12-09 20:14:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:41,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 20:14:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:41,618 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 20:14:41,619 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 20:14:41,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:14:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 20:14:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 20:14:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 20:14:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1064 transitions. [2020-12-09 20:14:41,634 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1064 transitions. Word has length 103 [2020-12-09 20:14:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:41,634 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1064 transitions. [2020-12-09 20:14:41,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1064 transitions. [2020-12-09 20:14:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 20:14:41,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:41,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 20:14:41,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:14:41,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash -502124081, now seen corresponding path program 1 times [2020-12-09 20:14:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:41,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444719701] [2020-12-09 20:14:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:41,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444719701] [2020-12-09 20:14:41,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:41,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:14:41,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16568236] [2020-12-09 20:14:41,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:41,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:41,977 INFO L87 Difference]: Start difference. First operand 723 states and 1064 transitions. Second operand 3 states. [2020-12-09 20:14:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:42,272 INFO L93 Difference]: Finished difference Result 1605 states and 2377 transitions. [2020-12-09 20:14:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:42,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 20:14:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:42,276 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 20:14:42,276 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 20:14:42,277 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 20:14:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 20:14:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-12-09 20:14:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 20:14:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1249 transitions. [2020-12-09 20:14:42,293 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1249 transitions. Word has length 103 [2020-12-09 20:14:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:42,293 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1249 transitions. [2020-12-09 20:14:42,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1249 transitions. [2020-12-09 20:14:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 20:14:42,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:42,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:42,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 20:14:42,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:42,296 INFO L82 PathProgramCache]: Analyzing trace with hash 972860030, now seen corresponding path program 1 times [2020-12-09 20:14:42,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:42,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177230956] [2020-12-09 20:14:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:42,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177230956] [2020-12-09 20:14:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:14:42,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571477401] [2020-12-09 20:14:42,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:42,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:42,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:42,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:42,332 INFO L87 Difference]: Start difference. First operand 883 states and 1249 transitions. Second operand 3 states. [2020-12-09 20:14:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:42,656 INFO L93 Difference]: Finished difference Result 2325 states and 3303 transitions. [2020-12-09 20:14:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:42,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 20:14:42,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:42,662 INFO L225 Difference]: With dead ends: 2325 [2020-12-09 20:14:42,662 INFO L226 Difference]: Without dead ends: 1443 [2020-12-09 20:14:42,663 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 20:14:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-12-09 20:14:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2020-12-09 20:14:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-12-09 20:14:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1950 transitions. [2020-12-09 20:14:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1950 transitions. Word has length 108 [2020-12-09 20:14:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:42,688 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1950 transitions. [2020-12-09 20:14:42,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1950 transitions. [2020-12-09 20:14:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 20:14:42,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:42,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:42,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 20:14:42,691 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1229843305, now seen corresponding path program 1 times [2020-12-09 20:14:42,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:42,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252774732] [2020-12-09 20:14:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:42,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252774732] [2020-12-09 20:14:42,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:42,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:14:42,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472273033] [2020-12-09 20:14:42,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:42,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:42,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:42,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:42,729 INFO L87 Difference]: Start difference. First operand 1443 states and 1950 transitions. Second operand 3 states. [2020-12-09 20:14:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:43,023 INFO L93 Difference]: Finished difference Result 2885 states and 3899 transitions. [2020-12-09 20:14:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:43,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-09 20:14:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:43,029 INFO L225 Difference]: With dead ends: 2885 [2020-12-09 20:14:43,030 INFO L226 Difference]: Without dead ends: 1443 [2020-12-09 20:14:43,031 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 20:14:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-12-09 20:14:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2020-12-09 20:14:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-12-09 20:14:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1840 transitions. [2020-12-09 20:14:43,054 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1840 transitions. Word has length 113 [2020-12-09 20:14:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:43,054 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1840 transitions. [2020-12-09 20:14:43,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1840 transitions. [2020-12-09 20:14:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 20:14:43,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:43,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:43,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 20:14:43,057 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash -917641716, now seen corresponding path program 1 times [2020-12-09 20:14:43,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:43,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104688020] [2020-12-09 20:14:43,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:43,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104688020] [2020-12-09 20:14:43,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:43,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:14:43,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370521248] [2020-12-09 20:14:43,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:43,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:43,093 INFO L87 Difference]: Start difference. First operand 1443 states and 1840 transitions. Second operand 3 states. [2020-12-09 20:14:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:43,402 INFO L93 Difference]: Finished difference Result 3845 states and 4906 transitions. [2020-12-09 20:14:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:43,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-09 20:14:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:43,414 INFO L225 Difference]: With dead ends: 3845 [2020-12-09 20:14:43,415 INFO L226 Difference]: Without dead ends: 2403 [2020-12-09 20:14:43,417 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 20:14:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2020-12-09 20:14:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2403. [2020-12-09 20:14:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2020-12-09 20:14:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2969 transitions. [2020-12-09 20:14:43,452 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2969 transitions. Word has length 113 [2020-12-09 20:14:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:43,452 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 2969 transitions. [2020-12-09 20:14:43,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2969 transitions. [2020-12-09 20:14:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-09 20:14:43,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:43,456 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:43,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 20:14:43,456 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1236699785, now seen corresponding path program 1 times [2020-12-09 20:14:43,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:43,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949023019] [2020-12-09 20:14:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 20:14:43,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949023019] [2020-12-09 20:14:43,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311020119] [2020-12-09 20:14:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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 20:14:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:43,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 20:14:43,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:14:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 20:14:43,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:14:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 20:14:43,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 20:14:43,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 20:14:43,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596660873] [2020-12-09 20:14:43,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:43,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:14:43,761 INFO L87 Difference]: Start difference. First operand 2403 states and 2969 transitions. Second operand 3 states. [2020-12-09 20:14:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:43,931 INFO L93 Difference]: Finished difference Result 4405 states and 5422 transitions. [2020-12-09 20:14:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:43,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-09 20:14:43,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:43,938 INFO L225 Difference]: With dead ends: 4405 [2020-12-09 20:14:43,938 INFO L226 Difference]: Without dead ends: 1923 [2020-12-09 20:14:43,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:14:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-12-09 20:14:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1923. [2020-12-09 20:14:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2020-12-09 20:14:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2274 transitions. [2020-12-09 20:14:43,966 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2274 transitions. Word has length 132 [2020-12-09 20:14:43,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:43,966 INFO L481 AbstractCegarLoop]: Abstraction has 1923 states and 2274 transitions. [2020-12-09 20:14:43,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2274 transitions. [2020-12-09 20:14:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-09 20:14:43,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:43,969 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, 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] [2020-12-09 20:14:44,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:14:44,171 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash 144681733, now seen corresponding path program 1 times [2020-12-09 20:14:44,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:44,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272203247] [2020-12-09 20:14:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-09 20:14:44,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272203247] [2020-12-09 20:14:44,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:44,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:14:44,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963774416] [2020-12-09 20:14:44,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:44,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:44,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:44,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:44,342 INFO L87 Difference]: Start difference. First operand 1923 states and 2274 transitions. Second operand 3 states. [2020-12-09 20:14:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:44,544 INFO L93 Difference]: Finished difference Result 3605 states and 4294 transitions. [2020-12-09 20:14:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:44,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-09 20:14:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:44,550 INFO L225 Difference]: With dead ends: 3605 [2020-12-09 20:14:44,550 INFO L226 Difference]: Without dead ends: 1763 [2020-12-09 20:14:44,551 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 20:14:44,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-12-09 20:14:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2020-12-09 20:14:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-12-09 20:14:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2074 transitions. [2020-12-09 20:14:44,574 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2074 transitions. Word has length 137 [2020-12-09 20:14:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:44,574 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2074 transitions. [2020-12-09 20:14:44,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2074 transitions. [2020-12-09 20:14:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 20:14:44,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:44,577 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-12-09 20:14:44,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 20:14:44,577 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:44,577 INFO L82 PathProgramCache]: Analyzing trace with hash -720437847, now seen corresponding path program 1 times [2020-12-09 20:14:44,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:44,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812590200] [2020-12-09 20:14:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 20:14:44,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812590200] [2020-12-09 20:14:44,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:44,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:14:44,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700869338] [2020-12-09 20:14:44,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:14:44,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:14:44,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:14:44,616 INFO L87 Difference]: Start difference. First operand 1763 states and 2074 transitions. Second operand 3 states. [2020-12-09 20:14:44,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:44,859 INFO L93 Difference]: Finished difference Result 2805 states and 3312 transitions. [2020-12-09 20:14:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:14:44,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-09 20:14:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:44,865 INFO L225 Difference]: With dead ends: 2805 [2020-12-09 20:14:44,865 INFO L226 Difference]: Without dead ends: 1603 [2020-12-09 20:14:44,866 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 20:14:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-12-09 20:14:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1603. [2020-12-09 20:14:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2020-12-09 20:14:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1852 transitions. [2020-12-09 20:14:44,885 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1852 transitions. Word has length 148 [2020-12-09 20:14:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:44,885 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 1852 transitions. [2020-12-09 20:14:44,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:14:44,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1852 transitions. [2020-12-09 20:14:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-09 20:14:44,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:44,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 20:14:44,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 20:14:44,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:44,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1312563473, now seen corresponding path program 1 times [2020-12-09 20:14:44,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:44,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285915878] [2020-12-09 20:14:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 20:14:45,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285915878] [2020-12-09 20:14:45,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:45,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:14:45,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274115649] [2020-12-09 20:14:45,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:14:45,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:14:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:14:45,017 INFO L87 Difference]: Start difference. First operand 1603 states and 1852 transitions. Second operand 5 states. [2020-12-09 20:14:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:45,432 INFO L93 Difference]: Finished difference Result 3253 states and 3755 transitions. [2020-12-09 20:14:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:14:45,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-12-09 20:14:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:45,437 INFO L225 Difference]: With dead ends: 3253 [2020-12-09 20:14:45,437 INFO L226 Difference]: Without dead ends: 1159 [2020-12-09 20:14:45,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:14:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-09 20:14:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1043. [2020-12-09 20:14:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 20:14:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1145 transitions. [2020-12-09 20:14:45,452 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1145 transitions. Word has length 196 [2020-12-09 20:14:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:45,452 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1145 transitions. [2020-12-09 20:14:45,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:14:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1145 transitions. [2020-12-09 20:14:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-12-09 20:14:45,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:45,455 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:45,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 20:14:45,455 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash -864613231, now seen corresponding path program 1 times [2020-12-09 20:14:45,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:45,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714403558] [2020-12-09 20:14:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-09 20:14:45,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714403558] [2020-12-09 20:14:45,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:14:45,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:14:45,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787971664] [2020-12-09 20:14:45,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:14:45,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:14:45,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:14:45,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:14:45,532 INFO L87 Difference]: Start difference. First operand 1043 states and 1145 transitions. Second operand 4 states. [2020-12-09 20:14:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:14:45,759 INFO L93 Difference]: Finished difference Result 2005 states and 2206 transitions. [2020-12-09 20:14:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:14:45,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-12-09 20:14:45,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:14:45,763 INFO L225 Difference]: With dead ends: 2005 [2020-12-09 20:14:45,763 INFO L226 Difference]: Without dead ends: 1043 [2020-12-09 20:14:45,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:14:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-09 20:14:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-12-09 20:14:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 20:14:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1139 transitions. [2020-12-09 20:14:45,775 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1139 transitions. Word has length 206 [2020-12-09 20:14:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:14:45,775 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1139 transitions. [2020-12-09 20:14:45,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:14:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1139 transitions. [2020-12-09 20:14:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-09 20:14:45,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:14:45,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:14:45,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 20:14:45,778 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:14:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:14:45,778 INFO L82 PathProgramCache]: Analyzing trace with hash -423647387, now seen corresponding path program 1 times [2020-12-09 20:14:45,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:14:45,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598146573] [2020-12-09 20:14:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:14:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 146 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:45,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598146573] [2020-12-09 20:14:45,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110705205] [2020-12-09 20:14:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/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 20:14:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:14:46,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 20:14:46,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:14:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 190 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:46,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:14:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 190 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:14:46,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1905922017] [2020-12-09 20:14:46,574 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 20:14:46,574 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 20:14:46,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 20:14:46,584 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 20:14:46,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 20:14:55,851 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:55,981 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:56,146 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:56,275 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:56,434 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:56,560 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:56,745 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 153 [2020-12-09 20:14:56,873 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:57,008 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:14:57,134 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-12-09 20:15:01,197 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2020-12-09 20:15:01,329 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2020-12-09 20:15:01,518 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2020-12-09 20:15:04,688 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 20:15:04,973 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2020-12-09 20:15:05,193 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-12-09 20:15:05,460 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 102 [2020-12-09 20:15:05,773 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 107 [2020-12-09 20:15:06,036 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-12-09 20:15:06,321 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-12-09 20:15:06,705 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 20:15:08,830 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-09 20:15:15,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:15:15,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 20:15:15,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2020-12-09 20:15:15,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286316211] [2020-12-09 20:15:15,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 20:15:15,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:15:15,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 20:15:15,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-12-09 20:15:15,340 INFO L87 Difference]: Start difference. First operand 1043 states and 1139 transitions. Second operand 9 states. [2020-12-09 20:15:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:15:15,968 INFO L93 Difference]: Finished difference Result 1964 states and 2143 transitions. [2020-12-09 20:15:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 20:15:15,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-12-09 20:15:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:15:15,968 INFO L225 Difference]: With dead ends: 1964 [2020-12-09 20:15:15,969 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:15:15,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 446 SyntacticMatches, 180 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-12-09 20:15:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:15:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:15:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:15:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:15:15,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2020-12-09 20:15:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:15:15,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:15:15,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 20:15:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:15:15,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:15:16,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:15:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 20:15:16,362 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-09 20:15:16,486 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 20:15:16,489 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 20:15:16,490 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 20:15:16,491 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= ~a28~0 9)) (.cse2 (= ~a17~0 8)) (.cse5 (<= 9 ~a28~0)) (.cse7 (<= ~a17~0 7)) (.cse10 (<= ~a28~0 10)) (.cse3 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse8 (= ~a25~0 0)) (.cse1 (= ~a21~0 1)) (.cse4 (not (= ~a11~0 1))) (.cse11 (<= ~a17~0 8)) (.cse9 (= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse3 .cse6 .cse7) (and .cse8 .cse1 .cse2 .cse6) (and .cse1 .cse2 .cse3 .cse4 .cse9) (and .cse5 .cse0 .cse1 .cse2 .cse3 .cse10) (and .cse5 .cse8 .cse7 .cse10) (and (= ~a25~0 ~a11~0) .cse0 .cse3 (<= ~a28~0 7) .cse11) (and .cse0 .cse8 .cse1 .cse4 .cse11 .cse9))) [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 20:15:16,492 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= ~a28~0 9)) (.cse2 (= ~a17~0 8)) (.cse5 (<= 9 ~a28~0)) (.cse7 (<= ~a17~0 7)) (.cse10 (<= ~a28~0 10)) (.cse3 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse8 (= ~a25~0 0)) (.cse1 (= ~a21~0 1)) (.cse4 (not (= ~a11~0 1))) (.cse11 (<= ~a17~0 8)) (.cse9 (= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse3 .cse6 .cse7) (and .cse8 .cse1 .cse2 .cse6) (and .cse1 .cse2 .cse3 .cse4 .cse9) (and .cse5 .cse0 .cse1 .cse2 .cse3 .cse10) (and .cse5 .cse8 .cse7 .cse10) (and (= ~a25~0 ~a11~0) .cse0 .cse3 (<= ~a28~0 7) .cse11) (and .cse0 .cse8 .cse1 .cse4 .cse11 .cse9))) [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 20:15:16,493 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 20:15:16,494 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 20:15:16,494 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 20:15:16,494 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 20:15:16,494 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 20:15:16,494 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 20:15:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:15:16 BoogieIcfgContainer [2020-12-09 20:15:16,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:15:16,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:15:16,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:15:16,511 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:15:16,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:14:39" (3/4) ... [2020-12-09 20:15:16,514 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:15:16,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-12-09 20:15:16,530 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 20:15:16,531 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 20:15:16,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 20:15:16,605 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_87bacd61-b5bf-4bde-b6d2-946c30f0dc0e/bin/utaipan/witness.graphml [2020-12-09 20:15:16,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:15:16,605 INFO L168 Benchmark]: Toolchain (without parser) took 39267.65 ms. Allocated memory was 104.9 MB in the beginning and 465.6 MB in the end (delta: 360.7 MB). Free memory was 80.8 MB in the beginning and 290.6 MB in the end (delta: -209.8 MB). Peak memory consumption was 154.8 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,606 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:15:16,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.58 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 80.5 MB in the end (delta: 207.4 kB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.74 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 74.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,606 INFO L168 Benchmark]: Boogie Preprocessor took 57.15 ms. Allocated memory is still 104.9 MB. Free memory was 74.9 MB in the beginning and 70.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,606 INFO L168 Benchmark]: RCFGBuilder took 1336.20 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.5 MB in the beginning and 87.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,607 INFO L168 Benchmark]: TraceAbstraction took 37367.11 ms. Allocated memory was 125.8 MB in the beginning and 465.6 MB in the end (delta: 339.7 MB). Free memory was 87.3 MB in the beginning and 305.4 MB in the end (delta: -218.2 MB). Peak memory consumption was 122.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,607 INFO L168 Benchmark]: Witness Printer took 94.05 ms. Allocated memory is still 465.6 MB. Free memory was 305.4 MB in the beginning and 290.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:15:16,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.58 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 80.5 MB in the end (delta: 207.4 kB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.74 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 74.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.15 ms. Allocated memory is still 104.9 MB. Free memory was 74.9 MB in the beginning and 70.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1336.20 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.5 MB in the beginning and 87.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37367.11 ms. Allocated memory was 125.8 MB in the beginning and 465.6 MB in the end (delta: 339.7 MB). Free memory was 87.3 MB in the beginning and 305.4 MB in the end (delta: -218.2 MB). Peak memory consumption was 122.6 MB. Max. memory is 16.1 GB. * Witness Printer took 94.05 ms. Allocated memory is still 465.6 MB. Free memory was 305.4 MB in the beginning and 290.6 MB in the end (delta: 14.8 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: 452]: 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 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) || (((9 <= a28 && a25 == 1) && a28 <= 9) && a17 <= 7)) || (((a25 == 0 && a21 == 1) && a17 == 8) && a28 <= 9)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || (((9 <= a28 && a25 == 0) && a17 <= 7) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a17 <= 8) && a28 == 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1)) || (((9 <= a28 && a25 == 1) && a28 <= 9) && a17 <= 7)) || (((a25 == 0 && a21 == 1) && a17 == 8) && a28 <= 9)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || (((9 <= a28 && a25 == 0) && a17 <= 7) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((((a19 == 1 && a25 == 0) && a21 == 1) && !(a11 == 1)) && a17 <= 8) && a28 == 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.9s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 974 SDtfs, 1349 SDslu, 123 SDs, 0 SdLazy, 4327 SolverSat, 764 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1329 GetRequests, 1100 SyntacticMatches, 183 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2403occurred 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: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 116 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 86 NumberOfFragments, 259 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3547 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 266 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2362 NumberOfCodeBlocks, 2362 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2877 ConstructedInterpolants, 0 QuantifiedInterpolants, 1580160 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1194 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 1614/1823 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...