./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.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_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/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_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/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_4a15216b-0b5e-445f-9122-4deee5496d9b/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 c3404c1fa142754bfca0a1613808298f0a5a3901 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:21:54,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:54,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:54,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:54,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:54,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:54,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:54,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:54,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:54,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:54,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:54,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:54,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:54,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:54,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:54,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:54,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:54,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:54,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:54,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:54,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:54,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:54,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:54,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:54,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:54,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:54,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:54,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:54,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:54,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:54,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:54,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:54,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:54,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:54,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:54,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:54,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:54,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:54,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:54,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:54,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:54,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:54,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:54,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:54,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:54,745 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:54,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:54,745 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:54,745 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:54,745 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:54,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:54,746 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:54,746 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:54,746 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:54,746 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:54,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:54,747 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:54,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:54,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:54,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:54,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:54,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:54,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:54,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:54,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:54,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:54,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:54,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:54,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:54,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:54,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:54,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:54,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:54,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:54,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:54,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:54,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:54,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:54,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:54,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:54,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:54,752 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_4a15216b-0b5e-445f-9122-4deee5496d9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3404c1fa142754bfca0a1613808298f0a5a3901 [2021-10-11 02:21:54,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:55,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:55,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:55,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:55,018 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:55,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2021-10-11 02:21:55,121 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/data/423a33794/5eb3571dec724e63b13cd7c4f18978dc/FLAGbacc1d65c [2021-10-11 02:21:55,671 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:55,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2021-10-11 02:21:55,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/data/423a33794/5eb3571dec724e63b13cd7c4f18978dc/FLAGbacc1d65c [2021-10-11 02:21:55,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/data/423a33794/5eb3571dec724e63b13cd7c4f18978dc [2021-10-11 02:21:55,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:55,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:55,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:55,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:55,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:55,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:55" (1/1) ... [2021-10-11 02:21:55,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ad887f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:55, skipping insertion in model container [2021-10-11 02:21:55,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:55" (1/1) ... [2021-10-11 02:21:55,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:56,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:56,382 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_4a15216b-0b5e-445f-9122-4deee5496d9b/sv-benchmarks/c/eca-rers2012/Problem01_label07.c[18480,18493] [2021-10-11 02:21:56,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:56,447 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:56,617 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_4a15216b-0b5e-445f-9122-4deee5496d9b/sv-benchmarks/c/eca-rers2012/Problem01_label07.c[18480,18493] [2021-10-11 02:21:56,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:56,663 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:56,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56 WrapperNode [2021-10-11 02:21:56,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:56,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:56,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:56,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:56,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:56,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:56,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:56,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:56,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... [2021-10-11 02:21:56,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:56,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:56,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:56,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:56,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/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 02:21:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:56,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:56,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:56,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:59,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:59,077 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:59,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:59 BoogieIcfgContainer [2021-10-11 02:21:59,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:59,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:59,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:59,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:59,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:55" (1/3) ... [2021-10-11 02:21:59,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:59, skipping insertion in model container [2021-10-11 02:21:59,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:56" (2/3) ... [2021-10-11 02:21:59,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:59, skipping insertion in model container [2021-10-11 02:21:59,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:59" (3/3) ... [2021-10-11 02:21:59,092 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2021-10-11 02:21:59,110 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:59,114 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:59,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:59,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:59,162 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:59,163 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:59,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:59,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:59,163 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:59,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:59,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:21:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:21:59,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:59,188 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 02:21:59,189 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1806911064, now seen corresponding path program 1 times [2021-10-11 02:21:59,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:59,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596924199] [2021-10-11 02:21:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:59,801 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 02:21:59,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596924199] [2021-10-11 02:21:59,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:59,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:59,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856660053] [2021-10-11 02:21:59,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:59,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:59,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:59,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:59,829 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:22:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:00,734 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:22:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:00,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:22:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:00,749 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:22:00,752 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:22:00,769 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 02:22:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:22:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:22:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:22:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:22:00,885 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:22:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:00,887 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:22:00,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:22:00,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:22:00,892 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:00,892 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 02:22:00,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:00,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:00,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1703776199, now seen corresponding path program 1 times [2021-10-11 02:22:00,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:00,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81672255] [2021-10-11 02:22:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:01,213 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 02:22:01,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81672255] [2021-10-11 02:22:01,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:01,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:01,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186515414] [2021-10-11 02:22:01,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:01,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:01,222 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:22:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:01,983 INFO L93 Difference]: Finished difference Result 571 states and 986 transitions. [2021-10-11 02:22:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:01,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:22:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:01,989 INFO L225 Difference]: With dead ends: 571 [2021-10-11 02:22:01,989 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:22:01,991 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 02:22:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:22:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2021-10-11 02:22:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:22:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:22:02,013 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:22:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:02,013 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:22:02,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:22:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:22:02,018 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:02,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:02,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:02,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:02,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:02,019 INFO L82 PathProgramCache]: Analyzing trace with hash 350100343, now seen corresponding path program 1 times [2021-10-11 02:22:02,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:02,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001098238] [2021-10-11 02:22:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:02,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001098238] [2021-10-11 02:22:02,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:02,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:02,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825881405] [2021-10-11 02:22:02,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:02,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:02,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:02,093 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:22:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:02,577 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:22:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:02,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:22:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:02,581 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:22:02,581 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:22:02,583 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 02:22:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:22:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:22:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:22:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2021-10-11 02:22:02,610 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2021-10-11 02:22:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:02,610 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2021-10-11 02:22:02,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2021-10-11 02:22:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:22:02,617 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:02,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:02,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:22:02,617 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:02,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:02,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1470704677, now seen corresponding path program 1 times [2021-10-11 02:22:02,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:02,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722816949] [2021-10-11 02:22:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:22:02,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722816949] [2021-10-11 02:22:02,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:02,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:02,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064956519] [2021-10-11 02:22:02,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:02,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:02,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:02,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:02,695 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2021-10-11 02:22:03,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:03,085 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2021-10-11 02:22:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:03,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:22:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:03,090 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:22:03,090 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:22:03,092 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 02:22:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:22:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:22:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:22:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2021-10-11 02:22:03,117 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 95 [2021-10-11 02:22:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:03,118 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2021-10-11 02:22:03,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2021-10-11 02:22:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:22:03,123 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:03,124 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:22:03,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:22:03,124 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:03,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1896309049, now seen corresponding path program 1 times [2021-10-11 02:22:03,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:03,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797881119] [2021-10-11 02:22:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:22:03,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797881119] [2021-10-11 02:22:03,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:03,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:03,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151558770] [2021-10-11 02:22:03,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:03,230 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2021-10-11 02:22:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:03,812 INFO L93 Difference]: Finished difference Result 1496 states and 2082 transitions. [2021-10-11 02:22:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:03,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2021-10-11 02:22:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:03,819 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:22:03,819 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:22:03,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:03,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:22:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 642. [2021-10-11 02:22:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:22:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2021-10-11 02:22:03,845 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2021-10-11 02:22:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:03,845 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2021-10-11 02:22:03,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2021-10-11 02:22:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:22:03,848 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:03,849 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:03,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:22:03,849 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:03,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1126657450, now seen corresponding path program 1 times [2021-10-11 02:22:03,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:03,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134642278] [2021-10-11 02:22:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:22:03,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134642278] [2021-10-11 02:22:03,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:03,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:03,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750834966] [2021-10-11 02:22:03,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:03,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:03,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:03,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:03,949 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2021-10-11 02:22:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:04,454 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2021-10-11 02:22:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:04,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2021-10-11 02:22:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:04,462 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:22:04,462 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:22:04,463 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 02:22:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:22:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:22:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:22:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2021-10-11 02:22:04,488 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2021-10-11 02:22:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:04,489 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2021-10-11 02:22:04,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2021-10-11 02:22:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-11 02:22:04,492 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:04,493 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-10-11 02:22:04,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:22:04,493 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1080130633, now seen corresponding path program 1 times [2021-10-11 02:22:04,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:04,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899735981] [2021-10-11 02:22:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:22:04,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899735981] [2021-10-11 02:22:04,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:04,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:04,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843747169] [2021-10-11 02:22:04,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:04,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:04,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:04,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:04,633 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2021-10-11 02:22:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:04,984 INFO L93 Difference]: Finished difference Result 1780 states and 2292 transitions. [2021-10-11 02:22:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:04,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2021-10-11 02:22:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:04,993 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:22:04,994 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:22:04,995 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 02:22:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:22:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2021-10-11 02:22:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:22:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1113 transitions. [2021-10-11 02:22:05,022 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1113 transitions. Word has length 176 [2021-10-11 02:22:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:05,022 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1113 transitions. [2021-10-11 02:22:05,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1113 transitions. [2021-10-11 02:22:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-10-11 02:22:05,027 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:05,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:05,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:22:05,028 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash -27490727, now seen corresponding path program 1 times [2021-10-11 02:22:05,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:05,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813767705] [2021-10-11 02:22:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-11 02:22:05,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813767705] [2021-10-11 02:22:05,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:05,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:05,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570941553] [2021-10-11 02:22:05,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:05,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:05,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:05,206 INFO L87 Difference]: Start difference. First operand 855 states and 1113 transitions. Second operand 3 states. [2021-10-11 02:22:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:05,596 INFO L93 Difference]: Finished difference Result 1851 states and 2378 transitions. [2021-10-11 02:22:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:05,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2021-10-11 02:22:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:05,603 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:22:05,604 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:22:05,605 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 02:22:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:22:05,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:22:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:22:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1153 transitions. [2021-10-11 02:22:05,637 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1153 transitions. Word has length 219 [2021-10-11 02:22:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:05,639 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1153 transitions. [2021-10-11 02:22:05,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1153 transitions. [2021-10-11 02:22:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-11 02:22:05,644 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:05,645 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:05,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:22:05,645 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash -194116904, now seen corresponding path program 1 times [2021-10-11 02:22:05,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:05,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549846491] [2021-10-11 02:22:05,648 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 02:22:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 253 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-11 02:22:05,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549846491] [2021-10-11 02:22:05,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400666774] [2021-10-11 02:22:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/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 02:22:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:06,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:06,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-10-11 02:22:06,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-10-11 02:22:06,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:06,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:22:06,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795042547] [2021-10-11 02:22:06,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:06,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:06,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:06,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:06,982 INFO L87 Difference]: Start difference. First operand 926 states and 1153 transitions. Second operand 3 states. [2021-10-11 02:22:07,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:07,323 INFO L93 Difference]: Finished difference Result 2135 states and 2648 transitions. [2021-10-11 02:22:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:07,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2021-10-11 02:22:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:07,335 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:22:07,335 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:22:07,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 461 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:22:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:22:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:22:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1333 transitions. [2021-10-11 02:22:07,372 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1333 transitions. Word has length 232 [2021-10-11 02:22:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:07,372 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1333 transitions. [2021-10-11 02:22:07,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1333 transitions. [2021-10-11 02:22:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-10-11 02:22:07,377 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:07,377 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:22:07,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:22:07,605 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:07,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:07,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1646205808, now seen corresponding path program 1 times [2021-10-11 02:22:07,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:07,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732350404] [2021-10-11 02:22:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:22:07,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732350404] [2021-10-11 02:22:07,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696533946] [2021-10-11 02:22:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/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 02:22:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:08,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:08,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:22:08,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:22:08,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:08,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:22:08,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266031196] [2021-10-11 02:22:08,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:08,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:08,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:08,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:08,692 INFO L87 Difference]: Start difference. First operand 1068 states and 1333 transitions. Second operand 3 states. [2021-10-11 02:22:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:09,011 INFO L93 Difference]: Finished difference Result 2133 states and 2664 transitions. [2021-10-11 02:22:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:09,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2021-10-11 02:22:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:09,013 INFO L225 Difference]: With dead ends: 2133 [2021-10-11 02:22:09,013 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:09,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 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 02:22:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:09,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2021-10-11 02:22:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:09,016 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:09,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:09,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:09,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:22:09,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:09,489 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-10-11 02:22:09,684 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:22:09,687 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:22:09,688 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:22:09,689 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:09,690 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:22:09,690 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:22:09,690 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:22:09,690 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2021-10-11 02:22:09,690 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:22:09,690 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:22:09,690 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:22:09,691 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 498) no Hoare annotation was computed. [2021-10-11 02:22:09,692 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:22:09,693 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:22:09,693 INFO L262 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:22:09,693 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:22:09,693 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:22:09,693 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:22:09,693 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:22:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:09 BoogieIcfgContainer [2021-10-11 02:22:09,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:09,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:09,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:09,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:09,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:59" (3/4) ... [2021-10-11 02:22:09,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:09,798 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:22:09,799 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:22:09,801 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:22:09,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:22:09,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a15216b-0b5e-445f-9122-4deee5496d9b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:09,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:09,977 INFO L168 Benchmark]: Toolchain (without parser) took 14005.09 ms. Allocated memory was 100.7 MB in the beginning and 413.1 MB in the end (delta: 312.5 MB). Free memory was 65.5 MB in the beginning and 301.7 MB in the end (delta: -236.2 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,977 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory was 54.0 MB in the beginning and 54.0 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:09,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.61 ms. Allocated memory is still 100.7 MB. Free memory was 65.3 MB in the beginning and 58.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.43 ms. Allocated memory is still 100.7 MB. Free memory was 58.7 MB in the beginning and 52.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,979 INFO L168 Benchmark]: Boogie Preprocessor took 91.70 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 52.9 MB in the beginning and 110.9 MB in the end (delta: -58.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,979 INFO L168 Benchmark]: RCFGBuilder took 2221.07 ms. Allocated memory was 138.4 MB in the beginning and 184.5 MB in the end (delta: 46.1 MB). Free memory was 110.9 MB in the beginning and 140.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,980 INFO L168 Benchmark]: TraceAbstraction took 10658.00 ms. Allocated memory was 184.5 MB in the beginning and 413.1 MB in the end (delta: 228.6 MB). Free memory was 139.2 MB in the beginning and 316.4 MB in the end (delta: -177.2 MB). Peak memory consumption was 230.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,980 INFO L168 Benchmark]: Witness Printer took 234.84 ms. Allocated memory is still 413.1 MB. Free memory was 316.4 MB in the beginning and 301.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:09,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory was 54.0 MB in the beginning and 54.0 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 692.61 ms. Allocated memory is still 100.7 MB. Free memory was 65.3 MB in the beginning and 58.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.43 ms. Allocated memory is still 100.7 MB. Free memory was 58.7 MB in the beginning and 52.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.70 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 52.9 MB in the beginning and 110.9 MB in the end (delta: -58.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2221.07 ms. Allocated memory was 138.4 MB in the beginning and 184.5 MB in the end (delta: 46.1 MB). Free memory was 110.9 MB in the beginning and 140.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10658.00 ms. Allocated memory was 184.5 MB in the beginning and 413.1 MB in the end (delta: 228.6 MB). Free memory was 139.2 MB in the beginning and 316.4 MB in the end (delta: -177.2 MB). Peak memory consumption was 230.7 MB. Max. memory is 16.1 GB. * Witness Printer took 234.84 ms. Allocated memory is still 413.1 MB. Free memory was 316.4 MB in the beginning and 301.7 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: 498]: 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 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 464 SDtfs, 1007 SDslu, 56 SDs, 0 SdLazy, 2505 SolverSat, 717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 954 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 177 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5086 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1925 NumberOfCodeBlocks, 1925 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2384 ConstructedInterpolants, 0 QuantifiedInterpolants, 1543606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1086 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 3158/3335 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...