./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6691501f936812008ae2aab4b0a1a1ac8b067e57 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:56,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:56,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:56,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:56,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:56,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:56,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:56,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:56,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:56,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:56,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:56,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:56,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:56,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:56,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:56,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:56,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:56,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:56,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:56,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:56,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:56,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:56,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:56,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:56,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:56,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:56,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:56,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:56,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:56,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:56,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:56,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:56,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:56,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:56,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:56,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:56,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:56,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:56,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:56,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:56,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:56,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:56,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:56,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:56,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:56,783 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:56,783 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:56,783 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:56,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:56,784 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:56,784 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:56,784 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:56,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:56,786 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:56,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:56,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:56,786 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:56,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:56,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:56,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:56,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:56,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:56,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:56,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:56,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:56,789 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:56,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:56,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:56,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:56,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:56,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:56,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:56,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:56,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:56,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:56,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:56,793 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:56,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:56,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:56,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:56,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:56,794 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6691501f936812008ae2aab4b0a1a1ac8b067e57 [2021-10-11 02:21:57,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:57,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:57,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:57,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:57,081 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:57,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label11.c [2021-10-11 02:21:57,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/data/7b94dd0b3/6da5778962db452fb933594296f1d6a7/FLAG3c9b42ec5 [2021-10-11 02:21:57,755 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:57,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/sv-benchmarks/c/eca-rers2012/Problem01_label11.c [2021-10-11 02:21:57,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/data/7b94dd0b3/6da5778962db452fb933594296f1d6a7/FLAG3c9b42ec5 [2021-10-11 02:21:57,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/data/7b94dd0b3/6da5778962db452fb933594296f1d6a7 [2021-10-11 02:21:57,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:57,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:57,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:57,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:58,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:58,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:57" (1/1) ... [2021-10-11 02:21:58,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0d88a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58, skipping insertion in model container [2021-10-11 02:21:58,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:57" (1/1) ... [2021-10-11 02:21:58,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:58,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:58,419 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/sv-benchmarks/c/eca-rers2012/Problem01_label11.c[19099,19112] [2021-10-11 02:21:58,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:58,464 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:58,654 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/sv-benchmarks/c/eca-rers2012/Problem01_label11.c[19099,19112] [2021-10-11 02:21:58,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:58,698 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:58,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58 WrapperNode [2021-10-11 02:21:58,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:58,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:58,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:58,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:58,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:58,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:58,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:58,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:58,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... [2021-10-11 02:21:58,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:58,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:58,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:58,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:58,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:59,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:00,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:00,979 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:22:00,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:00 BoogieIcfgContainer [2021-10-11 02:22:00,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:00,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:00,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:00,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:00,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:57" (1/3) ... [2021-10-11 02:22:00,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e212f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:00, skipping insertion in model container [2021-10-11 02:22:00,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:58" (2/3) ... [2021-10-11 02:22:00,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e212f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:00, skipping insertion in model container [2021-10-11 02:22:00,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:00" (3/3) ... [2021-10-11 02:22:00,993 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2021-10-11 02:22:01,007 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:01,010 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:01,021 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:01,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:01,059 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:01,059 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:01,059 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:01,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:01,059 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:01,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:01,060 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:22:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:22:01,083 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:01,084 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] [2021-10-11 02:22:01,084 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1806909784, now seen corresponding path program 1 times [2021-10-11 02:22:01,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:01,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823709758] [2021-10-11 02:22:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:01,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823709758] [2021-10-11 02:22:01,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:01,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:01,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043655401] [2021-10-11 02:22:01,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:01,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:01,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,446 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:22:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:01,925 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:22:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:01,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:22:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:01,940 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:22:01,941 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:22:01,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:22:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:22:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:22:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2021-10-11 02:22:01,995 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2021-10-11 02:22:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:01,996 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2021-10-11 02:22:01,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2021-10-11 02:22:02,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:22:02,000 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:02,001 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] [2021-10-11 02:22:02,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:02,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:02,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1034854277, now seen corresponding path program 1 times [2021-10-11 02:22:02,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:02,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154026337] [2021-10-11 02:22:02,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:02,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154026337] [2021-10-11 02:22:02,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:02,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:02,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079342931] [2021-10-11 02:22:02,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:02,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:02,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:02,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:02,107 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2021-10-11 02:22:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:02,649 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2021-10-11 02:22:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:02,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:22:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:02,653 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:22:02,653 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:22:02,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:22:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:22:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:22:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2021-10-11 02:22:02,682 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2021-10-11 02:22:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:02,682 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2021-10-11 02:22:02,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2021-10-11 02:22:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:22:02,686 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:02,687 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] [2021-10-11 02:22:02,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:02,687 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1703774919, now seen corresponding path program 1 times [2021-10-11 02:22:02,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:02,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53780984] [2021-10-11 02:22:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:03,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53780984] [2021-10-11 02:22:03,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:03,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:03,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545080626] [2021-10-11 02:22:03,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:03,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:03,080 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 4 states. [2021-10-11 02:22:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:03,694 INFO L93 Difference]: Finished difference Result 784 states and 1303 transitions. [2021-10-11 02:22:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:03,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:22:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:03,712 INFO L225 Difference]: With dead ends: 784 [2021-10-11 02:22:03,712 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:22:03,714 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 [2021-10-11 02:22:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:22:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:22:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:22:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 587 transitions. [2021-10-11 02:22:03,757 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 587 transitions. Word has length 78 [2021-10-11 02:22:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:03,758 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 587 transitions. [2021-10-11 02:22:03,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 587 transitions. [2021-10-11 02:22:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:22:03,763 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:03,763 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] [2021-10-11 02:22:03,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:22:03,763 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:03,764 INFO L82 PathProgramCache]: Analyzing trace with hash -494778802, now seen corresponding path program 1 times [2021-10-11 02:22:03,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:03,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311104348] [2021-10-11 02:22:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:03,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311104348] [2021-10-11 02:22:03,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:03,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:03,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054847202] [2021-10-11 02:22:03,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:03,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:03,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:03,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:03,838 INFO L87 Difference]: Start difference. First operand 429 states and 587 transitions. Second operand 4 states. [2021-10-11 02:22:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:04,424 INFO L93 Difference]: Finished difference Result 1212 states and 1727 transitions. [2021-10-11 02:22:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:04,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:22:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:04,432 INFO L225 Difference]: With dead ends: 1212 [2021-10-11 02:22:04,432 INFO L226 Difference]: Without dead ends: 784 [2021-10-11 02:22:04,438 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 [2021-10-11 02:22:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-11 02:22:04,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2021-10-11 02:22:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:22:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 806 transitions. [2021-10-11 02:22:04,477 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 806 transitions. Word has length 83 [2021-10-11 02:22:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:04,478 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 806 transitions. [2021-10-11 02:22:04,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:04,478 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 806 transitions. [2021-10-11 02:22:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-11 02:22:04,482 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:04,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1] [2021-10-11 02:22:04,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:22:04,483 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash -169371178, now seen corresponding path program 1 times [2021-10-11 02:22:04,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:04,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546381078] [2021-10-11 02:22:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:22:04,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546381078] [2021-10-11 02:22:04,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:04,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:04,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734708412] [2021-10-11 02:22:04,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:04,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:04,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:04,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:04,556 INFO L87 Difference]: Start difference. First operand 571 states and 806 transitions. Second operand 3 states. [2021-10-11 02:22:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:04,946 INFO L93 Difference]: Finished difference Result 1425 states and 1982 transitions. [2021-10-11 02:22:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:04,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2021-10-11 02:22:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:04,953 INFO L225 Difference]: With dead ends: 1425 [2021-10-11 02:22:04,954 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:22:04,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:22:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2021-10-11 02:22:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:22:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 997 transitions. [2021-10-11 02:22:04,978 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 997 transitions. Word has length 97 [2021-10-11 02:22:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:04,978 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 997 transitions. [2021-10-11 02:22:04,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 997 transitions. [2021-10-11 02:22:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:22:04,981 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:04,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2021-10-11 02:22:04,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:22:04,981 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1376081019, now seen corresponding path program 1 times [2021-10-11 02:22:04,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:04,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125028260] [2021-10-11 02:22:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:22:05,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125028260] [2021-10-11 02:22:05,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:05,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:05,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305289787] [2021-10-11 02:22:05,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:05,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:05,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:05,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:05,055 INFO L87 Difference]: Start difference. First operand 713 states and 997 transitions. Second operand 4 states. [2021-10-11 02:22:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:05,598 INFO L93 Difference]: Finished difference Result 1638 states and 2251 transitions. [2021-10-11 02:22:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:05,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2021-10-11 02:22:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:05,606 INFO L225 Difference]: With dead ends: 1638 [2021-10-11 02:22:05,607 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:22:05,609 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 [2021-10-11 02:22:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:22:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-11 02:22:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:22:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1157 transitions. [2021-10-11 02:22:05,642 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1157 transitions. Word has length 103 [2021-10-11 02:22:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:05,645 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1157 transitions. [2021-10-11 02:22:05,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1157 transitions. [2021-10-11 02:22:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-11 02:22:05,649 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:05,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:22:05,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:22:05,650 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:05,651 INFO L82 PathProgramCache]: Analyzing trace with hash 918722724, now seen corresponding path program 1 times [2021-10-11 02:22:05,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:05,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315152569] [2021-10-11 02:22:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-11 02:22:05,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315152569] [2021-10-11 02:22:05,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:05,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:05,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376082856] [2021-10-11 02:22:05,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:05,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:05,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:05,825 INFO L87 Difference]: Start difference. First operand 855 states and 1157 transitions. Second operand 3 states. [2021-10-11 02:22:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:06,187 INFO L93 Difference]: Finished difference Result 1851 states and 2519 transitions. [2021-10-11 02:22:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:06,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2021-10-11 02:22:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:06,196 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:22:06,196 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:22:06,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:22:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:22:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:22:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1315 transitions. [2021-10-11 02:22:06,226 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1315 transitions. Word has length 121 [2021-10-11 02:22:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1315 transitions. [2021-10-11 02:22:06,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1315 transitions. [2021-10-11 02:22:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-11 02:22:06,232 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:06,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:06,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:22:06,233 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1163046729, now seen corresponding path program 1 times [2021-10-11 02:22:06,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:06,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937135358] [2021-10-11 02:22:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:06,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937135358] [2021-10-11 02:22:06,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:06,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:06,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418564841] [2021-10-11 02:22:06,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:06,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:06,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:06,591 INFO L87 Difference]: Start difference. First operand 997 states and 1315 transitions. Second operand 5 states. [2021-10-11 02:22:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:07,338 INFO L93 Difference]: Finished difference Result 2490 states and 3243 transitions. [2021-10-11 02:22:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:07,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2021-10-11 02:22:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:07,347 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:22:07,347 INFO L226 Difference]: Without dead ends: 1494 [2021-10-11 02:22:07,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-11 02:22:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1139. [2021-10-11 02:22:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:22:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1477 transitions. [2021-10-11 02:22:07,382 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1477 transitions. Word has length 130 [2021-10-11 02:22:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:07,382 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1477 transitions. [2021-10-11 02:22:07,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1477 transitions. [2021-10-11 02:22:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:22:07,386 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:07,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:07,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:22:07,386 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1110352669, now seen corresponding path program 1 times [2021-10-11 02:22:07,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:07,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278541058] [2021-10-11 02:22:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 68 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:07,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278541058] [2021-10-11 02:22:07,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810657854] [2021-10-11 02:22:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:07,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:07,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:22:07,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:22:08,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:08,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:22:08,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594381849] [2021-10-11 02:22:08,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:08,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:08,049 INFO L87 Difference]: Start difference. First operand 1139 states and 1477 transitions. Second operand 3 states. [2021-10-11 02:22:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:08,524 INFO L93 Difference]: Finished difference Result 2916 states and 3798 transitions. [2021-10-11 02:22:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:08,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2021-10-11 02:22:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:08,541 INFO L225 Difference]: With dead ends: 2916 [2021-10-11 02:22:08,541 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:22:08,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:22:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1636. [2021-10-11 02:22:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2021-10-11 02:22:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2071 transitions. [2021-10-11 02:22:08,614 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2071 transitions. Word has length 134 [2021-10-11 02:22:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:08,615 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 2071 transitions. [2021-10-11 02:22:08,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:08,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2071 transitions. [2021-10-11 02:22:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-10-11 02:22:08,621 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:08,621 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:22:08,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:22:08,836 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:08,836 INFO L82 PathProgramCache]: Analyzing trace with hash -9932982, now seen corresponding path program 1 times [2021-10-11 02:22:08,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:08,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344653877] [2021-10-11 02:22:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-10-11 02:22:09,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344653877] [2021-10-11 02:22:09,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:09,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:09,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776656907] [2021-10-11 02:22:09,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:09,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:09,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:09,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:09,004 INFO L87 Difference]: Start difference. First operand 1636 states and 2071 transitions. Second operand 3 states. [2021-10-11 02:22:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:09,391 INFO L93 Difference]: Finished difference Result 3626 states and 4598 transitions. [2021-10-11 02:22:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:09,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2021-10-11 02:22:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:09,402 INFO L225 Difference]: With dead ends: 3626 [2021-10-11 02:22:09,402 INFO L226 Difference]: Without dead ends: 1991 [2021-10-11 02:22:09,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2021-10-11 02:22:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1778. [2021-10-11 02:22:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1778 states. [2021-10-11 02:22:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2238 transitions. [2021-10-11 02:22:09,452 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2238 transitions. Word has length 189 [2021-10-11 02:22:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:09,452 INFO L481 AbstractCegarLoop]: Abstraction has 1778 states and 2238 transitions. [2021-10-11 02:22:09,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2238 transitions. [2021-10-11 02:22:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-10-11 02:22:09,459 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:09,459 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 4, 4, 4, 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, 1, 1] [2021-10-11 02:22:09,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:22:09,460 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:09,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:09,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2015095857, now seen corresponding path program 1 times [2021-10-11 02:22:09,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:09,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93735408] [2021-10-11 02:22:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 304 proven. 77 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:22:09,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93735408] [2021-10-11 02:22:09,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951686200] [2021-10-11 02:22:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:09,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:09,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:22:10,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:22:10,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:10,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:22:10,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090018532] [2021-10-11 02:22:10,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:10,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:10,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:10,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:10,521 INFO L87 Difference]: Start difference. First operand 1778 states and 2238 transitions. Second operand 4 states. [2021-10-11 02:22:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:11,100 INFO L93 Difference]: Finished difference Result 4194 states and 5254 transitions. [2021-10-11 02:22:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:11,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2021-10-11 02:22:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:11,116 INFO L225 Difference]: With dead ends: 4194 [2021-10-11 02:22:11,117 INFO L226 Difference]: Without dead ends: 2417 [2021-10-11 02:22:11,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-10-11 02:22:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1210. [2021-10-11 02:22:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:22:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1504 transitions. [2021-10-11 02:22:11,167 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1504 transitions. Word has length 254 [2021-10-11 02:22:11,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:11,168 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1504 transitions. [2021-10-11 02:22:11,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1504 transitions. [2021-10-11 02:22:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-10-11 02:22:11,173 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:11,174 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1] [2021-10-11 02:22:11,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:11,399 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:11,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:11,400 INFO L82 PathProgramCache]: Analyzing trace with hash -69524871, now seen corresponding path program 1 times [2021-10-11 02:22:11,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:11,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973556597] [2021-10-11 02:22:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 296 proven. 174 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:22:11,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973556597] [2021-10-11 02:22:11,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438988599] [2021-10-11 02:22:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:12,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:12,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-11 02:22:12,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-11 02:22:12,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:12,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:22:12,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948961406] [2021-10-11 02:22:12,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:12,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:12,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:12,629 INFO L87 Difference]: Start difference. First operand 1210 states and 1504 transitions. Second operand 3 states. [2021-10-11 02:22:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:12,994 INFO L93 Difference]: Finished difference Result 2488 states and 3108 transitions. [2021-10-11 02:22:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:12,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2021-10-11 02:22:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:12,996 INFO L225 Difference]: With dead ends: 2488 [2021-10-11 02:22:12,996 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:12,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 525 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:13,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 263 [2021-10-11 02:22:13,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:13,000 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:13,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:13,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:13,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:22:13,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:13,619 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2021-10-11 02:22:13,828 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:22:13,831 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:22:13,832 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L513(line 513) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:22:13,833 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:22:13,834 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse5 (= ~a21~0 1)) (.cse2 (not (= ~a7~0 1))) (.cse7 (<= 15 ~a8~0)) (.cse6 (= ~a17~0 1)) (.cse3 (not (= 14 ~a8~0))) (.cse4 (= ~a20~0 1)) (.cse0 (<= ~a16~0 5)) (.cse1 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (<= 5 ~a16~0)) (and .cse5 (= ~a12~0 8) (<= ~a7~0 0) .cse4 .cse6) (and .cse0 .cse3 .cse6) (and .cse5 .cse1 .cse4) (and .cse1 .cse7) (and .cse2 .cse7 .cse6) (and .cse3 .cse1 .cse4) (and (< 13 ~a8~0) .cse0 .cse1))) [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:22:13,835 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:22:13,836 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse5 (= ~a21~0 1)) (.cse2 (not (= ~a7~0 1))) (.cse7 (<= 15 ~a8~0)) (.cse6 (= ~a17~0 1)) (.cse3 (not (= 14 ~a8~0))) (.cse4 (= ~a20~0 1)) (.cse0 (<= ~a16~0 5)) (.cse1 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (<= 5 ~a16~0)) (and .cse5 (= ~a12~0 8) (<= ~a7~0 0) .cse4 .cse6) (and .cse0 .cse3 .cse6) (and .cse5 .cse1 .cse4) (and .cse1 .cse7) (and .cse2 .cse7 .cse6) (and .cse3 .cse1 .cse4) (and (< 13 ~a8~0) .cse0 .cse1))) [2021-10-11 02:22:13,836 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 513) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:22:13,837 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:22:13,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:13 BoogieIcfgContainer [2021-10-11 02:22:13,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:13,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:13,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:13,857 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:13,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:00" (3/4) ... [2021-10-11 02:22:13,860 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:13,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:22:13,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:22:13,899 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:22:13,901 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:22:14,068 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1a7356-59c6-4337-b196-bbdbb2f9ed57/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:14,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:14,070 INFO L168 Benchmark]: Toolchain (without parser) took 16078.92 ms. Allocated memory was 127.9 MB in the beginning and 434.1 MB in the end (delta: 306.2 MB). Free memory was 94.0 MB in the beginning and 159.0 MB in the end (delta: -65.0 MB). Peak memory consumption was 240.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,071 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:14,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.66 ms. Allocated memory is still 127.9 MB. Free memory was 94.0 MB in the beginning and 85.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,072 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.27 ms. Allocated memory is still 127.9 MB. Free memory was 85.3 MB in the beginning and 80.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,073 INFO L168 Benchmark]: Boogie Preprocessor took 111.64 ms. Allocated memory is still 127.9 MB. Free memory was 80.0 MB in the beginning and 75.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,073 INFO L168 Benchmark]: RCFGBuilder took 2042.56 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 75.3 MB in the beginning and 104.1 MB in the end (delta: -28.8 MB). Peak memory consumption was 71.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,076 INFO L168 Benchmark]: TraceAbstraction took 12870.96 ms. Allocated memory was 161.5 MB in the beginning and 434.1 MB in the end (delta: 272.6 MB). Free memory was 103.0 MB in the beginning and 173.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 200.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,076 INFO L168 Benchmark]: Witness Printer took 212.34 ms. Allocated memory is still 434.1 MB. Free memory was 173.7 MB in the beginning and 159.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:14,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 706.66 ms. Allocated memory is still 127.9 MB. Free memory was 94.0 MB in the beginning and 85.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.27 ms. Allocated memory is still 127.9 MB. Free memory was 85.3 MB in the beginning and 80.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.64 ms. Allocated memory is still 127.9 MB. Free memory was 80.0 MB in the beginning and 75.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2042.56 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 75.3 MB in the beginning and 104.1 MB in the end (delta: -28.8 MB). Peak memory consumption was 71.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12870.96 ms. Allocated memory was 161.5 MB in the beginning and 434.1 MB in the end (delta: 272.6 MB). Free memory was 103.0 MB in the beginning and 173.7 MB in the end (delta: -70.7 MB). Peak memory consumption was 200.9 MB. Max. memory is 16.1 GB. * Witness Printer took 212.34 ms. Allocated memory is still 434.1 MB. Free memory was 173.7 MB in the beginning and 159.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 513]: 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 <= 5 && a17 <= 0) && !(a7 == 1)) || ((!(14 == a8) && a20 == 1) && 5 <= a16)) || ((((a21 == 1 && a12 == 8) && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 5 && !(14 == a8)) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || (a17 <= 0 && 15 <= a8)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || ((!(14 == a8) && a17 <= 0) && a20 == 1)) || ((13 < a8 && a16 <= 5) && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && a17 <= 0) && !(a7 == 1)) || ((!(14 == a8) && a20 == 1) && 5 <= a16)) || ((((a21 == 1 && a12 == 8) && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a16 <= 5 && !(14 == a8)) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || (a17 <= 0 && 15 <= a8)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || ((!(14 == a8) && a17 <= 0) && a20 == 1)) || ((13 < a8 && a16 <= 5) && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.1s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 469 SDtfs, 1003 SDslu, 68 SDs, 0 SdLazy, 3082 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1337 GetRequests, 1309 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1778occurred 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: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 2343 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 199 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10048 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 512 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2251 NumberOfCodeBlocks, 2251 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2884 ConstructedInterpolants, 0 QuantifiedInterpolants, 1796760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1472 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 3214/3478 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...