./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label12.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_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/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 74057909fb6c276d17d8009abfa8a9d3a5bed6a1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:13:15,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:13:15,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:13:15,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:13:15,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:13:15,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:13:15,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:13:15,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:13:15,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:13:15,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:13:15,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:13:15,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:13:15,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:13:15,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:13:15,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:13:15,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:13:15,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:13:15,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:13:15,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:13:15,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:13:15,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:13:15,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:13:15,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:13:15,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:13:15,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:13:15,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:13:15,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:13:15,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:13:15,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:13:15,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:13:15,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:13:15,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:13:15,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:13:15,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:13:15,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:13:15,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:13:15,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:13:15,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:13:15,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:13:15,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:13:15,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:13:15,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:13:15,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:13:15,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:13:15,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:13:15,727 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:13:15,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:13:15,727 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:13:15,727 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:13:15,728 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:13:15,728 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:13:15,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:13:15,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:13:15,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:13:15,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:13:15,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:13:15,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:13:15,731 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_9b50fb16-02c0-432c-9ea9-bad5c553523a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74057909fb6c276d17d8009abfa8a9d3a5bed6a1 [2020-12-09 06:13:15,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:13:15,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:13:15,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:13:15,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:13:15,930 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:13:15,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c [2020-12-09 06:13:15,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/data/f45f8dafb/b605984e7bb6477f8a2cb43d76bf4a12/FLAG4340b8a86 [2020-12-09 06:13:16,433 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:13:16,433 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/sv-benchmarks/c/eca-rers2012/Problem01_label12.c [2020-12-09 06:13:16,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/data/f45f8dafb/b605984e7bb6477f8a2cb43d76bf4a12/FLAG4340b8a86 [2020-12-09 06:13:16,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/data/f45f8dafb/b605984e7bb6477f8a2cb43d76bf4a12 [2020-12-09 06:13:16,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:13:16,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:13:16,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:13:16,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:13:16,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:13:16,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2943886e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16, skipping insertion in model container [2020-12-09 06:13:16,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:13:16,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:13:16,776 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_9b50fb16-02c0-432c-9ea9-bad5c553523a/sv-benchmarks/c/eca-rers2012/Problem01_label12.c[20469,20482] [2020-12-09 06:13:16,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:13:16,802 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:13:16,878 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_9b50fb16-02c0-432c-9ea9-bad5c553523a/sv-benchmarks/c/eca-rers2012/Problem01_label12.c[20469,20482] [2020-12-09 06:13:16,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:13:16,900 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:13:16,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16 WrapperNode [2020-12-09 06:13:16,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:13:16,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:13:16,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:13:16,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:13:16,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:13:16,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:13:16,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:13:16,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:13:16,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:16,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:17,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:17,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:17,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... [2020-12-09 06:13:17,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:13:17,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:13:17,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:13:17,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:13:17,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:13:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:13:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:13:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:13:17,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:13:18,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:13:18,340 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:13:18,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:13:18 BoogieIcfgContainer [2020-12-09 06:13:18,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:13:18,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:13:18,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:13:18,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:13:18,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:13:16" (1/3) ... [2020-12-09 06:13:18,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ee5f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:13:18, skipping insertion in model container [2020-12-09 06:13:18,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:13:16" (2/3) ... [2020-12-09 06:13:18,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ee5f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:13:18, skipping insertion in model container [2020-12-09 06:13:18,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:13:18" (3/3) ... [2020-12-09 06:13:18,349 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label12.c [2020-12-09 06:13:18,358 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:13:18,361 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:13:18,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 06:13:18,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:13:18,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:13:18,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:13:18,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:13:18,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:13:18,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:13:18,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:13:18,387 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:13:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 06:13:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 06:13:18,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:18,404 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] [2020-12-09 06:13:18,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1806906968, now seen corresponding path program 1 times [2020-12-09 06:13:18,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:18,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128314810] [2020-12-09 06:13:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:13:18,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128314810] [2020-12-09 06:13:18,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:18,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:13:18,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366812871] [2020-12-09 06:13:18,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:18,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:18,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:18,696 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 06:13:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:19,016 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 06:13:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:19,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 06:13:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:19,026 INFO L225 Difference]: With dead ends: 224 [2020-12-09 06:13:19,026 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 06:13:19,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:19,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 06:13:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 06:13:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 06:13:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 06:13:19,068 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 06:13:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:19,069 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 06:13:19,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 06:13:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 06:13:19,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:19,071 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 06:13:19,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:13:19,072 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1034851461, now seen corresponding path program 1 times [2020-12-09 06:13:19,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:19,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896515425] [2020-12-09 06:13:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:13:19,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896515425] [2020-12-09 06:13:19,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:19,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:13:19,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465492636] [2020-12-09 06:13:19,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:19,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:19,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:19,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:19,117 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 06:13:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:19,378 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-12-09 06:13:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:19,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 06:13:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:19,381 INFO L225 Difference]: With dead ends: 431 [2020-12-09 06:13:19,381 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 06:13:19,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 06:13:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 06:13:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 06:13:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2020-12-09 06:13:19,399 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2020-12-09 06:13:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:19,399 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2020-12-09 06:13:19,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2020-12-09 06:13:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 06:13:19,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:19,401 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 06:13:19,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:13:19,401 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:19,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1703772103, now seen corresponding path program 1 times [2020-12-09 06:13:19,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:19,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512627705] [2020-12-09 06:13:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:13:19,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512627705] [2020-12-09 06:13:19,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:19,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190788251] [2020-12-09 06:13:19,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:13:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:13:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:13:19,549 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 4 states. [2020-12-09 06:13:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:19,936 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2020-12-09 06:13:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:13:19,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 06:13:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:19,939 INFO L225 Difference]: With dead ends: 784 [2020-12-09 06:13:19,939 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 06:13:19,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:13:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 06:13:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-12-09 06:13:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 06:13:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2020-12-09 06:13:19,960 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2020-12-09 06:13:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:19,960 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2020-12-09 06:13:19,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:13:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2020-12-09 06:13:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 06:13:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:19,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:13:19,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:13:19,963 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:19,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:19,963 INFO L82 PathProgramCache]: Analyzing trace with hash -494775986, now seen corresponding path program 1 times [2020-12-09 06:13:19,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:19,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051411157] [2020-12-09 06:13:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:13:20,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051411157] [2020-12-09 06:13:20,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:20,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76349462] [2020-12-09 06:13:20,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:13:20,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:13:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:13:20,028 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand 4 states. [2020-12-09 06:13:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:20,301 INFO L93 Difference]: Finished difference Result 999 states and 1360 transitions. [2020-12-09 06:13:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:13:20,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 06:13:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:20,304 INFO L225 Difference]: With dead ends: 999 [2020-12-09 06:13:20,304 INFO L226 Difference]: Without dead ends: 642 [2020-12-09 06:13:20,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:13:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-12-09 06:13:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-12-09 06:13:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 06:13:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 776 transitions. [2020-12-09 06:13:20,324 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 776 transitions. Word has length 83 [2020-12-09 06:13:20,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:20,325 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 776 transitions. [2020-12-09 06:13:20,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:13:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 776 transitions. [2020-12-09 06:13:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 06:13:20,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:20,327 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-12-09 06:13:20,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:13:20,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:20,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1470700581, now seen corresponding path program 1 times [2020-12-09 06:13:20,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:20,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582773771] [2020-12-09 06:13:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 06:13:20,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582773771] [2020-12-09 06:13:20,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:20,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:20,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273951212] [2020-12-09 06:13:20,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:20,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:20,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:20,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:20,375 INFO L87 Difference]: Start difference. First operand 571 states and 776 transitions. Second operand 3 states. [2020-12-09 06:13:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:20,588 INFO L93 Difference]: Finished difference Result 1496 states and 1996 transitions. [2020-12-09 06:13:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:20,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 06:13:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:20,593 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 06:13:20,594 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 06:13:20,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 06:13:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2020-12-09 06:13:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 06:13:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 954 transitions. [2020-12-09 06:13:20,618 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 954 transitions. Word has length 95 [2020-12-09 06:13:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:20,618 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 954 transitions. [2020-12-09 06:13:20,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 954 transitions. [2020-12-09 06:13:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-09 06:13:20,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:20,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1] [2020-12-09 06:13:20,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:13:20,621 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1745917258, now seen corresponding path program 1 times [2020-12-09 06:13:20,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:20,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232248694] [2020-12-09 06:13:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:13:20,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232248694] [2020-12-09 06:13:20,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:20,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:13:20,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208305032] [2020-12-09 06:13:20,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:13:20,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:20,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:13:20,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:13:20,688 INFO L87 Difference]: Start difference. First operand 713 states and 954 transitions. Second operand 4 states. [2020-12-09 06:13:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:21,094 INFO L93 Difference]: Finished difference Result 1638 states and 2226 transitions. [2020-12-09 06:13:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:13:21,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-12-09 06:13:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:21,099 INFO L225 Difference]: With dead ends: 1638 [2020-12-09 06:13:21,099 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 06:13:21,100 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 06:13:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 06:13:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2020-12-09 06:13:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 06:13:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 948 transitions. [2020-12-09 06:13:21,119 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 948 transitions. Word has length 101 [2020-12-09 06:13:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:21,119 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 948 transitions. [2020-12-09 06:13:21,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:13:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 948 transitions. [2020-12-09 06:13:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-09 06:13:21,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:21,121 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:13:21,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:13:21,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:21,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:21,122 INFO L82 PathProgramCache]: Analyzing trace with hash -656955571, now seen corresponding path program 1 times [2020-12-09 06:13:21,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:21,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008249603] [2020-12-09 06:13:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 06:13:21,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008249603] [2020-12-09 06:13:21,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:21,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:21,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022411021] [2020-12-09 06:13:21,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:13:21,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:21,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:13:21,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:13:21,186 INFO L87 Difference]: Start difference. First operand 713 states and 948 transitions. Second operand 4 states. [2020-12-09 06:13:21,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:21,548 INFO L93 Difference]: Finished difference Result 1638 states and 2154 transitions. [2020-12-09 06:13:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:13:21,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-12-09 06:13:21,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:21,553 INFO L225 Difference]: With dead ends: 1638 [2020-12-09 06:13:21,553 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 06:13:21,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:13:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 06:13:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-12-09 06:13:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-12-09 06:13:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1109 transitions. [2020-12-09 06:13:21,576 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1109 transitions. Word has length 115 [2020-12-09 06:13:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:21,576 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1109 transitions. [2020-12-09 06:13:21,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:13:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1109 transitions. [2020-12-09 06:13:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-09 06:13:21,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:21,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 06:13:21,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:13:21,579 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 905971240, now seen corresponding path program 1 times [2020-12-09 06:13:21,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:21,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507785295] [2020-12-09 06:13:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 06:13:21,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507785295] [2020-12-09 06:13:21,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:21,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:21,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334435085] [2020-12-09 06:13:21,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:21,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:21,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:21,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:21,668 INFO L87 Difference]: Start difference. First operand 855 states and 1109 transitions. Second operand 3 states. [2020-12-09 06:13:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:21,918 INFO L93 Difference]: Finished difference Result 1922 states and 2468 transitions. [2020-12-09 06:13:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:21,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-09 06:13:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:21,924 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 06:13:21,925 INFO L226 Difference]: Without dead ends: 1068 [2020-12-09 06:13:21,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-12-09 06:13:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-12-09 06:13:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 06:13:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1201 transitions. [2020-12-09 06:13:21,958 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1201 transitions. Word has length 132 [2020-12-09 06:13:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:21,959 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1201 transitions. [2020-12-09 06:13:21,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1201 transitions. [2020-12-09 06:13:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-09 06:13:21,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:21,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:13:21,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 06:13:21,962 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:21,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:21,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1422756918, now seen corresponding path program 1 times [2020-12-09 06:13:21,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:21,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121035723] [2020-12-09 06:13:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 06:13:22,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121035723] [2020-12-09 06:13:22,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:22,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:22,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338936920] [2020-12-09 06:13:22,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:22,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:22,042 INFO L87 Difference]: Start difference. First operand 926 states and 1201 transitions. Second operand 3 states. [2020-12-09 06:13:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:22,263 INFO L93 Difference]: Finished difference Result 2064 states and 2658 transitions. [2020-12-09 06:13:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:22,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-09 06:13:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:22,268 INFO L225 Difference]: With dead ends: 2064 [2020-12-09 06:13:22,268 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 06:13:22,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 06:13:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-12-09 06:13:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 06:13:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1357 transitions. [2020-12-09 06:13:22,286 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1357 transitions. Word has length 175 [2020-12-09 06:13:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:22,286 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1357 transitions. [2020-12-09 06:13:22,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1357 transitions. [2020-12-09 06:13:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-09 06:13:22,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:22,289 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:13:22,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 06:13:22,289 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:22,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1489449673, now seen corresponding path program 1 times [2020-12-09 06:13:22,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:22,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342543221] [2020-12-09 06:13:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 159 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-09 06:13:22,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342543221] [2020-12-09 06:13:22,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718826818] [2020-12-09 06:13:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:13:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:22,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:13:22,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:13:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 06:13:22,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:13:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-12-09 06:13:22,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:13:22,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 06:13:22,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759691596] [2020-12-09 06:13:22,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:22,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:22,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:22,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:13:22,845 INFO L87 Difference]: Start difference. First operand 1068 states and 1357 transitions. Second operand 3 states. [2020-12-09 06:13:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:23,045 INFO L93 Difference]: Finished difference Result 2561 states and 3277 transitions. [2020-12-09 06:13:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:23,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-12-09 06:13:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:23,050 INFO L225 Difference]: With dead ends: 2561 [2020-12-09 06:13:23,051 INFO L226 Difference]: Without dead ends: 1494 [2020-12-09 06:13:23,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:13:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-12-09 06:13:23,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1281. [2020-12-09 06:13:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-12-09 06:13:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1649 transitions. [2020-12-09 06:13:23,072 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1649 transitions. Word has length 188 [2020-12-09 06:13:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:23,073 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1649 transitions. [2020-12-09 06:13:23,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:23,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1649 transitions. [2020-12-09 06:13:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-09 06:13:23,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:23,075 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 06:13:23,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 06:13:23,277 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:23,278 INFO L82 PathProgramCache]: Analyzing trace with hash 922668897, now seen corresponding path program 1 times [2020-12-09 06:13:23,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:23,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420426155] [2020-12-09 06:13:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-12-09 06:13:23,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420426155] [2020-12-09 06:13:23,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:13:23,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:13:23,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221862686] [2020-12-09 06:13:23,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:23,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:23,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:23,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:23,495 INFO L87 Difference]: Start difference. First operand 1281 states and 1649 transitions. Second operand 3 states. [2020-12-09 06:13:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:23,746 INFO L93 Difference]: Finished difference Result 2845 states and 3645 transitions. [2020-12-09 06:13:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:23,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-09 06:13:23,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:23,753 INFO L225 Difference]: With dead ends: 2845 [2020-12-09 06:13:23,753 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 06:13:23,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:13:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 06:13:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1210. [2020-12-09 06:13:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 06:13:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1495 transitions. [2020-12-09 06:13:23,782 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1495 transitions. Word has length 197 [2020-12-09 06:13:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:23,782 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1495 transitions. [2020-12-09 06:13:23,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1495 transitions. [2020-12-09 06:13:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-09 06:13:23,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:13:23,787 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-12-09 06:13:23,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 06:13:23,787 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:13:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:13:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash 236748877, now seen corresponding path program 1 times [2020-12-09 06:13:23,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:13:23,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749147463] [2020-12-09 06:13:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:13:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 06:13:24,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749147463] [2020-12-09 06:13:24,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611218724] [2020-12-09 06:13:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:13:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:13:24,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 06:13:24,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:13:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 06:13:24,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:13:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 06:13:24,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:13:24,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 06:13:24,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774419931] [2020-12-09 06:13:24,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:13:24,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:13:24,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:13:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:13:24,400 INFO L87 Difference]: Start difference. First operand 1210 states and 1495 transitions. Second operand 3 states. [2020-12-09 06:13:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:13:24,584 INFO L93 Difference]: Finished difference Result 2488 states and 3080 transitions. [2020-12-09 06:13:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:13:24,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-12-09 06:13:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:13:24,585 INFO L225 Difference]: With dead ends: 2488 [2020-12-09 06:13:24,585 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:13:24,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:13:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:13:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:13:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:13:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:13:24,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2020-12-09 06:13:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:13:24,588 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:13:24,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:13:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:13:24,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:13:24,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-09 06:13:24,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:13:25,023 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-12-09 06:13:25,135 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 06:13:25,137 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 06:13:25,138 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L546(line 546) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:13:25,139 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse2 (not (= ~a7~0 1))) (.cse7 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse1 (<= ~a17~0 0)) (.cse6 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse1 .cse6) (and .cse0 .cse2 .cse3 .cse7) (and .cse4 .cse2 .cse3 .cse7) (and (= ~a21~0 1) (= ~a12~0 8) .cse6 .cse2 .cse7) (and .cse4 .cse7 .cse5) (and .cse4 .cse1) (and .cse6 .cse5))) [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:13:25,140 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 06:13:25,141 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse2 (not (= ~a7~0 1))) (.cse7 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse1 (<= ~a17~0 0)) (.cse6 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse2 .cse5) (and .cse1 .cse6) (and .cse0 .cse2 .cse3 .cse7) (and .cse4 .cse2 .cse3 .cse7) (and (= ~a21~0 1) (= ~a12~0 8) .cse6 .cse2 .cse7) (and .cse4 .cse7 .cse5) (and .cse4 .cse1) (and .cse6 .cse5))) [2020-12-09 06:13:25,141 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 546) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 06:13:25,142 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 06:13:25,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:13:25 BoogieIcfgContainer [2020-12-09 06:13:25,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:13:25,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:13:25,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:13:25,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:13:25,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:13:18" (3/4) ... [2020-12-09 06:13:25,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:13:25,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 06:13:25,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 06:13:25,176 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 06:13:25,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 06:13:25,251 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9b50fb16-02c0-432c-9ea9-bad5c553523a/bin/utaipan/witness.graphml [2020-12-09 06:13:25,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:13:25,252 INFO L168 Benchmark]: Toolchain (without parser) took 8792.84 ms. Allocated memory was 86.0 MB in the beginning and 297.8 MB in the end (delta: 211.8 MB). Free memory was 55.4 MB in the beginning and 194.1 MB in the end (delta: -138.7 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,252 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:13:25,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.23 ms. Allocated memory is still 86.0 MB. Free memory was 55.2 MB in the beginning and 52.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.51 ms. Allocated memory is still 86.0 MB. Free memory was 52.6 MB in the beginning and 46.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,253 INFO L168 Benchmark]: Boogie Preprocessor took 56.52 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 42.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,253 INFO L168 Benchmark]: RCFGBuilder took 1314.77 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 42.1 MB in the beginning and 81.3 MB in the end (delta: -39.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,253 INFO L168 Benchmark]: TraceAbstraction took 6811.77 ms. Allocated memory was 132.1 MB in the beginning and 297.8 MB in the end (delta: 165.7 MB). Free memory was 80.3 MB in the beginning and 210.0 MB in the end (delta: -129.7 MB). Peak memory consumption was 157.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,253 INFO L168 Benchmark]: Witness Printer took 95.22 ms. Allocated memory is still 297.8 MB. Free memory was 210.0 MB in the beginning and 194.1 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 06:13:25,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 65.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.23 ms. Allocated memory is still 86.0 MB. Free memory was 55.2 MB in the beginning and 52.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.51 ms. Allocated memory is still 86.0 MB. Free memory was 52.6 MB in the beginning and 46.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.52 ms. Allocated memory is still 86.0 MB. Free memory was 46.9 MB in the beginning and 42.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1314.77 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 42.1 MB in the beginning and 81.3 MB in the end (delta: -39.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6811.77 ms. Allocated memory was 132.1 MB in the beginning and 297.8 MB in the end (delta: 165.7 MB). Free memory was 80.3 MB in the beginning and 210.0 MB in the end (delta: -129.7 MB). Peak memory consumption was 157.6 MB. Max. memory is 16.1 GB. * Witness Printer took 95.22 ms. Allocated memory is still 297.8 MB. Free memory was 210.0 MB in the beginning and 194.1 MB in the end (delta: 15.9 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: 546]: 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: 40]: Loop Invariant Derived loop invariant: ((((((((((a16 == 6 && a17 <= 0) && !(a7 == 1)) && 15 <= a8) || ((a16 <= 5 && !(a7 == 1)) && a8 <= 13)) || (a17 <= 0 && a20 == 1)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || (a20 == 1 && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((a16 == 6 && a17 <= 0) && !(a7 == 1)) && 15 <= a8) || ((a16 <= 5 && !(a7 == 1)) && a8 <= 13)) || (a17 <= 0 && a20 == 1)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0)) || (a20 == 1 && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 578 SDtfs, 962 SDslu, 57 SDs, 0 SdLazy, 2767 SolverSat, 693 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 818 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=10, 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, 12 MinimizatonAttempts, 1136 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 205 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7740 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 756 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1932 NumberOfCodeBlocks, 1932 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1363809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 937 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 2023/2144 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...