./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.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_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/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_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/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_719a9ab1-cc13-46db-a93c-7fb4f713546a/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 0675521d022a764ecdc1621f141761ef94d4be70 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:26:17,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:17,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:17,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:17,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:17,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:17,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:17,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:17,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:17,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:17,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:17,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:17,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:17,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:17,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:17,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:17,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:17,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:17,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:17,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:17,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:17,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:17,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:17,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:17,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:17,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:17,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:17,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:17,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:17,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:17,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:17,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:17,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:17,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:17,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:17,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:17,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:17,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:17,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:17,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:17,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:17,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:17,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:17,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:17,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:17,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:17,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:17,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:17,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:17,748 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:17,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:17,749 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:17,749 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:17,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:17,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:17,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:17,751 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:17,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:17,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:17,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:17,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:17,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:17,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:17,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:17,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:17,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:17,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:17,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:17,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:17,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:17,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:17,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:17,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:17,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:17,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:17,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:17,759 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:17,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:17,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:17,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:17,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:17,761 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_719a9ab1-cc13-46db-a93c-7fb4f713546a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0675521d022a764ecdc1621f141761ef94d4be70 [2021-10-11 02:26:18,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:18,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:18,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:18,069 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:18,070 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:18,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2021-10-11 02:26:18,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/data/4c6af90b0/591c375f17d949b8bb530d13ef05d46c/FLAGb1dbcca34 [2021-10-11 02:26:18,758 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:18,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2021-10-11 02:26:18,772 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/data/4c6af90b0/591c375f17d949b8bb530d13ef05d46c/FLAGb1dbcca34 [2021-10-11 02:26:19,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/data/4c6af90b0/591c375f17d949b8bb530d13ef05d46c [2021-10-11 02:26:19,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:19,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:19,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:19,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:19,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:19,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7010c110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19, skipping insertion in model container [2021-10-11 02:26:19,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:19,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:19,550 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_719a9ab1-cc13-46db-a93c-7fb4f713546a/sv-benchmarks/c/eca-rers2012/Problem01_label17.c[19973,19986] [2021-10-11 02:26:19,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:19,585 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:19,707 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_719a9ab1-cc13-46db-a93c-7fb4f713546a/sv-benchmarks/c/eca-rers2012/Problem01_label17.c[19973,19986] [2021-10-11 02:26:19,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:19,744 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:19,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19 WrapperNode [2021-10-11 02:26:19,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:19,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:19,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:19,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:19,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:19,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:19,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:19,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:19,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... [2021-10-11 02:26:19,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:19,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:19,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:19,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:19,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/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 02:26:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:22,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:22,199 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:26:22,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:22 BoogieIcfgContainer [2021-10-11 02:26:22,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:22,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:22,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:22,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:22,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:19" (1/3) ... [2021-10-11 02:26:22,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dba6ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:22, skipping insertion in model container [2021-10-11 02:26:22,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:19" (2/3) ... [2021-10-11 02:26:22,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dba6ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:22, skipping insertion in model container [2021-10-11 02:26:22,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:22" (3/3) ... [2021-10-11 02:26:22,211 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2021-10-11 02:26:22,238 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:22,242 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:22,253 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:22,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:22,296 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:22,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:22,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:22,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:22,297 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:22,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:22,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:22,316 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:26:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:26:22,326 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:22,326 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 02:26:22,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:22,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1806907992, now seen corresponding path program 1 times [2021-10-11 02:26:22,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:22,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983923929] [2021-10-11 02:26:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:22,820 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 02:26:22,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983923929] [2021-10-11 02:26:22,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:22,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:22,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700346128] [2021-10-11 02:26:22,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:22,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:22,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:22,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:22,847 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:26:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:23,381 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:26:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:23,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:26:23,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:23,407 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:26:23,407 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:26:23,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:26:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:26:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:26:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:26:23,485 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:26:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:23,486 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:26:23,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:26:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:26:23,491 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:23,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:23,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:23,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1034852485, now seen corresponding path program 1 times [2021-10-11 02:26:23,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:23,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403542863] [2021-10-11 02:26:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:23,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403542863] [2021-10-11 02:26:23,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:23,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:23,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613757109] [2021-10-11 02:26:23,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:23,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:23,594 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:26:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:24,047 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:26:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:24,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:26:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:24,051 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:26:24,051 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:26:24,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:26:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:26:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:26:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-11 02:26:24,074 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-10-11 02:26:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:24,075 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-11 02:26:24,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-11 02:26:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-11 02:26:24,079 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:24,079 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:24,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:24,080 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash 525299414, now seen corresponding path program 1 times [2021-10-11 02:26:24,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:24,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922873452] [2021-10-11 02:26:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:24,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922873452] [2021-10-11 02:26:24,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:24,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:24,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691051231] [2021-10-11 02:26:24,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:24,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:24,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:24,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:24,233 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2021-10-11 02:26:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:24,863 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2021-10-11 02:26:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:24,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2021-10-11 02:26:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:24,869 INFO L225 Difference]: With dead ends: 715 [2021-10-11 02:26:24,870 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:26:24,875 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 02:26:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:26:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:26:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:26:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2021-10-11 02:26:24,916 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2021-10-11 02:26:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:24,917 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2021-10-11 02:26:24,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2021-10-11 02:26:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-11 02:26:24,924 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:24,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:24,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:24,925 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash -863061728, now seen corresponding path program 1 times [2021-10-11 02:26:24,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:24,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647246937] [2021-10-11 02:26:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:26:25,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647246937] [2021-10-11 02:26:25,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:25,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:25,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359110143] [2021-10-11 02:26:25,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:25,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:25,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:25,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:25,032 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2021-10-11 02:26:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:25,439 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2021-10-11 02:26:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:25,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2021-10-11 02:26:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:25,449 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:26:25,449 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:26:25,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:26:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2021-10-11 02:26:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:26:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2021-10-11 02:26:25,487 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2021-10-11 02:26:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:25,487 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2021-10-11 02:26:25,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2021-10-11 02:26:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:26:25,489 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:25,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:25,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:25,490 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:25,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1821420760, now seen corresponding path program 1 times [2021-10-11 02:26:25,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:25,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872277799] [2021-10-11 02:26:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:26:25,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872277799] [2021-10-11 02:26:25,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:25,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:25,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10313594] [2021-10-11 02:26:25,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:25,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:25,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:25,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:25,629 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2021-10-11 02:26:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,229 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2021-10-11 02:26:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:26,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2021-10-11 02:26:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,233 INFO L225 Difference]: With dead ends: 1354 [2021-10-11 02:26:26,234 INFO L226 Difference]: Without dead ends: 784 [2021-10-11 02:26:26,235 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 02:26:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-11 02:26:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2021-10-11 02:26:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:26:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2021-10-11 02:26:26,259 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2021-10-11 02:26:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,260 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2021-10-11 02:26:26,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2021-10-11 02:26:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-11 02:26:26,262 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,263 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:26,263 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1123297804, now seen corresponding path program 1 times [2021-10-11 02:26:26,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726054663] [2021-10-11 02:26:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-11 02:26:26,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726054663] [2021-10-11 02:26:26,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:26,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396273936] [2021-10-11 02:26:26,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:26,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:26,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:26,327 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2021-10-11 02:26:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,738 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2021-10-11 02:26:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:26,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2021-10-11 02:26:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,746 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:26:26,746 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:26:26,748 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 02:26:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:26:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-11 02:26:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:26:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1175 transitions. [2021-10-11 02:26:26,778 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1175 transitions. Word has length 122 [2021-10-11 02:26:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,779 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1175 transitions. [2021-10-11 02:26:26,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1175 transitions. [2021-10-11 02:26:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-11 02:26:26,782 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:26,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:26,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1134310394, now seen corresponding path program 1 times [2021-10-11 02:26:26,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422435807] [2021-10-11 02:26:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-11 02:26:26,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422435807] [2021-10-11 02:26:26,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:26,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589558417] [2021-10-11 02:26:26,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:26,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:26,858 INFO L87 Difference]: Start difference. First operand 926 states and 1175 transitions. Second operand 3 states. [2021-10-11 02:26:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:27,227 INFO L93 Difference]: Finished difference Result 1851 states and 2349 transitions. [2021-10-11 02:26:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:27,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2021-10-11 02:26:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:27,233 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:26:27,233 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:26:27,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:26:27,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2021-10-11 02:26:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:26:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1161 transitions. [2021-10-11 02:26:27,264 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1161 transitions. Word has length 138 [2021-10-11 02:26:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:27,265 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1161 transitions. [2021-10-11 02:26:27,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1161 transitions. [2021-10-11 02:26:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:26:27,268 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:27,268 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:27,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:27,269 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2113822372, now seen corresponding path program 1 times [2021-10-11 02:26:27,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:27,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231694121] [2021-10-11 02:26:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-11 02:26:27,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231694121] [2021-10-11 02:26:27,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:27,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:27,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828652334] [2021-10-11 02:26:27,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:27,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:27,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:27,364 INFO L87 Difference]: Start difference. First operand 926 states and 1161 transitions. Second operand 4 states. [2021-10-11 02:26:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:27,880 INFO L93 Difference]: Finished difference Result 1922 states and 2403 transitions. [2021-10-11 02:26:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:27,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2021-10-11 02:26:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:27,886 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:26:27,886 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:26:27,887 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 02:26:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:26:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:26:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:26:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2021-10-11 02:26:27,915 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2021-10-11 02:26:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:27,916 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2021-10-11 02:26:27,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2021-10-11 02:26:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:26:27,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:27,920 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:26:27,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:27,920 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1461366935, now seen corresponding path program 1 times [2021-10-11 02:26:27,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:27,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757230597] [2021-10-11 02:26:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-11 02:26:28,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757230597] [2021-10-11 02:26:28,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:28,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:28,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124244532] [2021-10-11 02:26:28,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:28,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:28,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:28,033 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2021-10-11 02:26:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:28,387 INFO L93 Difference]: Finished difference Result 2277 states and 2824 transitions. [2021-10-11 02:26:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:28,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:26:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:28,396 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:26:28,396 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:26:28,398 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 02:26:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:26:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1068. [2021-10-11 02:26:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:26:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1322 transitions. [2021-10-11 02:26:28,445 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1322 transitions. Word has length 171 [2021-10-11 02:26:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:28,447 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1322 transitions. [2021-10-11 02:26:28,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1322 transitions. [2021-10-11 02:26:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-10-11 02:26:28,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:28,454 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:28,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:28,454 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:28,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1682003720, now seen corresponding path program 1 times [2021-10-11 02:26:28,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:28,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576889696] [2021-10-11 02:26:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-11 02:26:28,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576889696] [2021-10-11 02:26:28,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:28,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:28,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104662732] [2021-10-11 02:26:28,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:28,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:28,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:28,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:28,594 INFO L87 Difference]: Start difference. First operand 1068 states and 1322 transitions. Second operand 3 states. [2021-10-11 02:26:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:28,936 INFO L93 Difference]: Finished difference Result 2277 states and 2796 transitions. [2021-10-11 02:26:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:28,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2021-10-11 02:26:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:28,944 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:26:28,944 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:26:28,946 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 02:26:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:26:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-11 02:26:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:26:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1375 transitions. [2021-10-11 02:26:28,993 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1375 transitions. Word has length 220 [2021-10-11 02:26:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:28,994 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1375 transitions. [2021-10-11 02:26:28,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1375 transitions. [2021-10-11 02:26:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-11 02:26:28,999 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:28,999 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:26:29,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:26:29,000 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1742519385, now seen corresponding path program 1 times [2021-10-11 02:26:29,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:29,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845295344] [2021-10-11 02:26:29,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 252 proven. 35 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-11 02:26:29,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845295344] [2021-10-11 02:26:29,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690829236] [2021-10-11 02:26:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/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 02:26:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:29,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:29,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-10-11 02:26:29,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-10-11 02:26:30,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:30,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:26:30,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462425316] [2021-10-11 02:26:30,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:30,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:30,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:30,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:30,298 INFO L87 Difference]: Start difference. First operand 1139 states and 1375 transitions. Second operand 3 states. [2021-10-11 02:26:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:30,656 INFO L93 Difference]: Finished difference Result 2490 states and 3053 transitions. [2021-10-11 02:26:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:30,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2021-10-11 02:26:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:30,666 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:26:30,666 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:26:30,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 463 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 02:26:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:26:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2021-10-11 02:26:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2021-10-11 02:26:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1584 transitions. [2021-10-11 02:26:30,705 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1584 transitions. Word has length 233 [2021-10-11 02:26:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:30,705 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1584 transitions. [2021-10-11 02:26:30,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1584 transitions. [2021-10-11 02:26:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-10-11 02:26:30,710 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:30,710 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:26:30,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:26:30,924 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1337018687, now seen corresponding path program 1 times [2021-10-11 02:26:30,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:30,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467879648] [2021-10-11 02:26:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-11 02:26:31,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467879648] [2021-10-11 02:26:31,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:31,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:31,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297528153] [2021-10-11 02:26:31,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:31,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:31,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:31,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:31,197 INFO L87 Difference]: Start difference. First operand 1281 states and 1584 transitions. Second operand 3 states. [2021-10-11 02:26:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:31,571 INFO L93 Difference]: Finished difference Result 2774 states and 3405 transitions. [2021-10-11 02:26:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:31,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2021-10-11 02:26:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:31,579 INFO L225 Difference]: With dead ends: 2774 [2021-10-11 02:26:31,580 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:26:31,582 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 02:26:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:26:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-11 02:26:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:26:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1462 transitions. [2021-10-11 02:26:31,617 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1462 transitions. Word has length 242 [2021-10-11 02:26:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:31,618 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1462 transitions. [2021-10-11 02:26:31,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1462 transitions. [2021-10-11 02:26:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-10-11 02:26:31,627 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:31,628 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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 02:26:31,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:26:31,628 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1304547605, now seen corresponding path program 1 times [2021-10-11 02:26:31,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:31,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848779264] [2021-10-11 02:26:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 334 proven. 153 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-11 02:26:32,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848779264] [2021-10-11 02:26:32,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081002460] [2021-10-11 02:26:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/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 02:26:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:32,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:26:32,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-11 02:26:32,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-10-11 02:26:33,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:26:33,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:26:33,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017603100] [2021-10-11 02:26:33,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:33,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:33,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:33,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:33,048 INFO L87 Difference]: Start difference. First operand 1210 states and 1462 transitions. Second operand 3 states. [2021-10-11 02:26:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:33,377 INFO L93 Difference]: Finished difference Result 2417 states and 2928 transitions. [2021-10-11 02:26:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:33,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2021-10-11 02:26:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:33,378 INFO L225 Difference]: With dead ends: 2417 [2021-10-11 02:26:33,378 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:33,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:33,381 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2021-10-11 02:26:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:33,381 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:33,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:33,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:33,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 02:26:33,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:26:33,900 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-10-11 02:26:34,092 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-10-11 02:26:34,095 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:26:34,095 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:26:34,095 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:26:34,096 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:26:34,097 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:26:34,098 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:26:34,099 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:26:34,100 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:26:34,100 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:26:34,100 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:26:34,100 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:26:34,100 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:26:34,100 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (<= 15 ~a8~0)) (.cse9 (<= ~a16~0 4)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a20~0 1)) (.cse6 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse5 .cse6) (and .cse7 .cse8 .cse1 .cse6) (and .cse3 .cse4 .cse8 .cse2) (and .cse0 .cse1 .cse5 .cse6) (and .cse9 .cse8 .cse2) (and .cse7 .cse9 .cse8 .cse6) (and .cse7 .cse4 .cse8) (and .cse0 .cse6 .cse2) (and .cse0 .cse4))) [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:26:34,101 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:26:34,102 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:26:34,103 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (<= 15 ~a8~0)) (.cse9 (<= ~a16~0 4)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a20~0 1)) (.cse6 (= ~a17~0 1)) (.cse2 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 5)) (.cse4 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse5 .cse6) (and .cse7 .cse8 .cse1 .cse6) (and .cse3 .cse4 .cse8 .cse2) (and .cse0 .cse1 .cse5 .cse6) (and .cse9 .cse8 .cse2) (and .cse7 .cse9 .cse8 .cse6) (and .cse7 .cse4 .cse8) (and .cse0 .cse6 .cse2) (and .cse0 .cse4))) [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 534) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:26:34,104 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:26:34,105 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:26:34,105 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:26:34,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:34 BoogieIcfgContainer [2021-10-11 02:26:34,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:34,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:34,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:34,126 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:34,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:22" (3/4) ... [2021-10-11 02:26:34,129 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:34,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:26:34,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:26:34,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:26:34,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:26:34,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_719a9ab1-cc13-46db-a93c-7fb4f713546a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:34,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:34,275 INFO L168 Benchmark]: Toolchain (without parser) took 15169.90 ms. Allocated memory was 123.7 MB in the beginning and 413.1 MB in the end (delta: 289.4 MB). Free memory was 82.1 MB in the beginning and 324.2 MB in the end (delta: -242.1 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,275 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 123.7 MB. Free memory was 100.8 MB in the beginning and 100.7 MB in the end (delta: 60.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:34,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.87 ms. Allocated memory is still 123.7 MB. Free memory was 81.9 MB in the beginning and 81.6 MB in the end (delta: 335.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.45 ms. Allocated memory is still 123.7 MB. Free memory was 81.6 MB in the beginning and 75.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,277 INFO L168 Benchmark]: Boogie Preprocessor took 62.16 ms. Allocated memory is still 123.7 MB. Free memory was 75.8 MB in the beginning and 71.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,277 INFO L168 Benchmark]: RCFGBuilder took 2291.17 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 71.2 MB in the beginning and 68.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,278 INFO L168 Benchmark]: TraceAbstraction took 11921.25 ms. Allocated memory was 172.0 MB in the beginning and 413.1 MB in the end (delta: 241.2 MB). Free memory was 68.9 MB in the beginning and 339.9 MB in the end (delta: -271.0 MB). Peak memory consumption was 177.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,278 INFO L168 Benchmark]: Witness Printer took 148.85 ms. Allocated memory is still 413.1 MB. Free memory was 339.9 MB in the beginning and 324.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:34,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 123.7 MB. Free memory was 100.8 MB in the beginning and 100.7 MB in the end (delta: 60.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 634.87 ms. Allocated memory is still 123.7 MB. Free memory was 81.9 MB in the beginning and 81.6 MB in the end (delta: 335.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.45 ms. Allocated memory is still 123.7 MB. Free memory was 81.6 MB in the beginning and 75.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.16 ms. Allocated memory is still 123.7 MB. Free memory was 75.8 MB in the beginning and 71.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2291.17 ms. Allocated memory was 123.7 MB in the beginning and 172.0 MB in the end (delta: 48.2 MB). Free memory was 71.2 MB in the beginning and 68.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11921.25 ms. Allocated memory was 172.0 MB in the beginning and 413.1 MB in the end (delta: 241.2 MB). Free memory was 68.9 MB in the beginning and 339.9 MB in the end (delta: -271.0 MB). Peak memory consumption was 177.8 MB. Max. memory is 16.1 GB. * Witness Printer took 148.85 ms. Allocated memory is still 413.1 MB. Free memory was 339.9 MB in the beginning and 324.2 MB in the end (delta: 15.7 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: 534]: 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 && !(a7 == 1)) && a8 <= 13) || ((a16 == 6 && a17 <= 0) && 15 <= a8)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a16 <= 5 && !(a7 == 1)) && a8 <= 13) || ((a16 == 6 && a17 <= 0) && 15 <= a8)) || (((a16 == 6 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || (((a16 <= 5 && !(a7 == 1)) && 15 <= a8) && a17 == 1)) || ((a16 <= 4 && a20 == 1) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || (a16 <= 5 && a17 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.3s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 615 SDtfs, 925 SDslu, 61 SDs, 0 SdLazy, 2947 SolverSat, 719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1068 GetRequests, 1042 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 255 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2326 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2554 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3053 ConstructedInterpolants, 0 QuantifiedInterpolants, 1955779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1130 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 17 InterpolantComputations, 15 PerfectInterpolantSequences, 3985/4173 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...