./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.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_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/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_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/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_08551c66-aeb3-4856-960c-c68ce4778ec0/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 b121c0464c557212174d50c3c43859d1b7172e79 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:30:21,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:21,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:22,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:22,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:22,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:22,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:22,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:22,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:22,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:22,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:22,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:22,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:22,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:22,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:22,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:22,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:22,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:22,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:22,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:22,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:22,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:22,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:22,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:22,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:22,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:22,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:22,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:22,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:22,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:22,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:22,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:22,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:22,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:22,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:22,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:22,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:22,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:22,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:22,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:22,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:22,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:22,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:22,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:22,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:22,116 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:22,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:22,117 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:22,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:22,118 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:22,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:22,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:22,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:22,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:22,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:22,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:22,120 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:22,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:22,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:22,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:22,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:22,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:22,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:22,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:22,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:22,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:22,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:22,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:22,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:22,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:22,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:22,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:22,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:22,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:22,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:22,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:22,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:22,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:22,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:22,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:22,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:22,129 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_08551c66-aeb3-4856-960c-c68ce4778ec0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b121c0464c557212174d50c3c43859d1b7172e79 [2021-10-11 02:30:22,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:22,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:22,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:22,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:22,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:22,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2021-10-11 02:30:22,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/data/548df0725/985cc90cf4ae41378be5b9c694bf5f8c/FLAG376daca83 [2021-10-11 02:30:23,152 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:23,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2021-10-11 02:30:23,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/data/548df0725/985cc90cf4ae41378be5b9c694bf5f8c/FLAG376daca83 [2021-10-11 02:30:23,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/data/548df0725/985cc90cf4ae41378be5b9c694bf5f8c [2021-10-11 02:30:23,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:23,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:23,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:23,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:23,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:23,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:23" (1/1) ... [2021-10-11 02:30:23,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc2253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:23, skipping insertion in model container [2021-10-11 02:30:23,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:23" (1/1) ... [2021-10-11 02:30:23,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:23,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:23,832 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_08551c66-aeb3-4856-960c-c68ce4778ec0/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2021-10-11 02:30:23,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:23,895 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:23,998 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_08551c66-aeb3-4856-960c-c68ce4778ec0/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2021-10-11 02:30:24,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:24,043 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:24,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24 WrapperNode [2021-10-11 02:30:24,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:24,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:24,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:24,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:24,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:24,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:24,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:24,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:24,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:24,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:24,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:24,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:24,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/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 02:30:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:24,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:26,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:26,548 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:30:26,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:26 BoogieIcfgContainer [2021-10-11 02:30:26,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:26,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:26,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:26,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:26,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:23" (1/3) ... [2021-10-11 02:30:26,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25761b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:26, skipping insertion in model container [2021-10-11 02:30:26,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24" (2/3) ... [2021-10-11 02:30:26,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25761b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:26, skipping insertion in model container [2021-10-11 02:30:26,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:26" (3/3) ... [2021-10-11 02:30:26,564 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2021-10-11 02:30:26,581 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:26,585 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:26,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:30:26,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:26,635 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:26,635 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:26,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:26,635 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:26,635 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:26,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:26,636 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:30:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:30:26,666 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:26,667 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 02:30:26,669 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:26,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1323238041, now seen corresponding path program 1 times [2021-10-11 02:30:26,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:26,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131567742] [2021-10-11 02:30:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,132 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 02:30:27,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131567742] [2021-10-11 02:30:27,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:27,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278926143] [2021-10-11 02:30:27,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:27,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:27,155 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:30:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,715 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:30:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:27,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:30:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,748 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:30:27,749 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:30:27,756 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 02:30:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:30:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:30:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:30:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2021-10-11 02:30:27,838 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2021-10-11 02:30:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,840 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2021-10-11 02:30:27,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2021-10-11 02:30:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:30:27,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,845 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 02:30:27,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:27,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1048390662, now seen corresponding path program 1 times [2021-10-11 02:30:27,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778271632] [2021-10-11 02:30:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,947 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 02:30:27,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778271632] [2021-10-11 02:30:27,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:27,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157434210] [2021-10-11 02:30:27,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:27,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:27,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:27,955 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2021-10-11 02:30:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:28,411 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2021-10-11 02:30:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:28,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:30:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:28,416 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:30:28,416 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:30:28,420 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 02:30:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:30:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:30:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:30:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2021-10-11 02:30:28,453 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2021-10-11 02:30:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:28,454 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2021-10-11 02:30:28,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2021-10-11 02:30:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:30:28,466 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:28,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:28,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:28,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2123295334, now seen corresponding path program 1 times [2021-10-11 02:30:28,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:28,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435347225] [2021-10-11 02:30:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:28,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435347225] [2021-10-11 02:30:28,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:28,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:28,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748152077] [2021-10-11 02:30:28,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:28,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:28,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:28,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:28,656 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 3 states. [2021-10-11 02:30:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:29,122 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2021-10-11 02:30:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:29,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-10-11 02:30:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:29,126 INFO L225 Difference]: With dead ends: 786 [2021-10-11 02:30:29,126 INFO L226 Difference]: Without dead ends: 500 [2021-10-11 02:30:29,128 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 02:30:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-11 02:30:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2021-10-11 02:30:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:30:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-11 02:30:29,147 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2021-10-11 02:30:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:29,147 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-11 02:30:29,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-11 02:30:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:30:29,149 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:29,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:29,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:30:29,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:29,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1566183221, now seen corresponding path program 1 times [2021-10-11 02:30:29,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:29,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948295159] [2021-10-11 02:30:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:29,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948295159] [2021-10-11 02:30:29,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:29,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:29,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217046865] [2021-10-11 02:30:29,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:29,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:29,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:29,210 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand 3 states. [2021-10-11 02:30:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:29,625 INFO L93 Difference]: Finished difference Result 786 states and 1256 transitions. [2021-10-11 02:30:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:29,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:30:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:29,628 INFO L225 Difference]: With dead ends: 786 [2021-10-11 02:30:29,628 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:30:29,629 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 02:30:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:30:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:30:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:30:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 476 transitions. [2021-10-11 02:30:29,642 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 476 transitions. Word has length 84 [2021-10-11 02:30:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:29,642 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 476 transitions. [2021-10-11 02:30:29,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 476 transitions. [2021-10-11 02:30:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-11 02:30:29,644 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:29,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:29,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:30:29,644 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash -77576813, now seen corresponding path program 1 times [2021-10-11 02:30:29,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:29,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451185885] [2021-10-11 02:30:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:30:29,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451185885] [2021-10-11 02:30:29,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:29,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:29,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593735031] [2021-10-11 02:30:29,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:29,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:29,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:29,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:29,708 INFO L87 Difference]: Start difference. First operand 358 states and 476 transitions. Second operand 3 states. [2021-10-11 02:30:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:30,049 INFO L93 Difference]: Finished difference Result 999 states and 1333 transitions. [2021-10-11 02:30:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:30,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2021-10-11 02:30:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:30,053 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:30:30,054 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:30:30,054 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 02:30:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:30:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:30:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:30:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 722 transitions. [2021-10-11 02:30:30,072 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 722 transitions. Word has length 88 [2021-10-11 02:30:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:30,073 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 722 transitions. [2021-10-11 02:30:30,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 722 transitions. [2021-10-11 02:30:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-11 02:30:30,075 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:30,075 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:30,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:30:30,075 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash -969910315, now seen corresponding path program 1 times [2021-10-11 02:30:30,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:30,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919195013] [2021-10-11 02:30:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 02:30:30,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919195013] [2021-10-11 02:30:30,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:30,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:30,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913805053] [2021-10-11 02:30:30,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:30,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:30,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:30,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:30,123 INFO L87 Difference]: Start difference. First operand 571 states and 722 transitions. Second operand 3 states. [2021-10-11 02:30:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:30,469 INFO L93 Difference]: Finished difference Result 1425 states and 1805 transitions. [2021-10-11 02:30:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:30,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2021-10-11 02:30:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:30,481 INFO L225 Difference]: With dead ends: 1425 [2021-10-11 02:30:30,481 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:30:30,483 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 02:30:30,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:30:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2021-10-11 02:30:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:30:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 910 transitions. [2021-10-11 02:30:30,533 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 910 transitions. Word has length 97 [2021-10-11 02:30:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:30,535 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 910 transitions. [2021-10-11 02:30:30,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 910 transitions. [2021-10-11 02:30:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-11 02:30:30,537 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:30,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:30:30,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:30:30,538 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:30,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:30,539 INFO L82 PathProgramCache]: Analyzing trace with hash 397475491, now seen corresponding path program 1 times [2021-10-11 02:30:30,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:30,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964580966] [2021-10-11 02:30:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:30,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964580966] [2021-10-11 02:30:30,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:30,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:30,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390159776] [2021-10-11 02:30:30,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:30,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:30,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:30,631 INFO L87 Difference]: Start difference. First operand 713 states and 910 transitions. Second operand 3 states. [2021-10-11 02:30:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:30,952 INFO L93 Difference]: Finished difference Result 1567 states and 1989 transitions. [2021-10-11 02:30:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:30,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2021-10-11 02:30:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:30,957 INFO L225 Difference]: With dead ends: 1567 [2021-10-11 02:30:30,958 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:30:30,959 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 02:30:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:30:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-11 02:30:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:30:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1066 transitions. [2021-10-11 02:30:30,981 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1066 transitions. Word has length 100 [2021-10-11 02:30:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:30,982 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1066 transitions. [2021-10-11 02:30:30,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1066 transitions. [2021-10-11 02:30:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-11 02:30:30,984 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:30,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:30:30,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:30:30,984 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2113454955, now seen corresponding path program 1 times [2021-10-11 02:30:30,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:30,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438276453] [2021-10-11 02:30:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:31,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438276453] [2021-10-11 02:30:31,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794414430] [2021-10-11 02:30:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/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 02:30:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:31,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:31,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-11 02:30:31,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-11 02:30:31,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:30:31,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:30:31,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159041857] [2021-10-11 02:30:31,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:31,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:31,534 INFO L87 Difference]: Start difference. First operand 855 states and 1066 transitions. Second operand 3 states. [2021-10-11 02:30:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:31,916 INFO L93 Difference]: Finished difference Result 2277 states and 2886 transitions. [2021-10-11 02:30:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:31,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2021-10-11 02:30:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:31,925 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:30:31,925 INFO L226 Difference]: Without dead ends: 1494 [2021-10-11 02:30:31,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-11 02:30:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1352. [2021-10-11 02:30:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:30:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1667 transitions. [2021-10-11 02:30:31,967 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1667 transitions. Word has length 104 [2021-10-11 02:30:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:31,968 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1667 transitions. [2021-10-11 02:30:31,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1667 transitions. [2021-10-11 02:30:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-10-11 02:30:31,972 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:31,972 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, 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 02:30:32,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 02:30:32,188 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash -637028942, now seen corresponding path program 1 times [2021-10-11 02:30:32,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:32,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625254157] [2021-10-11 02:30:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:30:32,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625254157] [2021-10-11 02:30:32,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340112539] [2021-10-11 02:30:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/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 02:30:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:32,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:32,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:30:32,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-11 02:30:32,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:30:32,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:30:32,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714609175] [2021-10-11 02:30:32,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:32,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:32,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:32,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:32,733 INFO L87 Difference]: Start difference. First operand 1352 states and 1667 transitions. Second operand 3 states. [2021-10-11 02:30:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:33,064 INFO L93 Difference]: Finished difference Result 2774 states and 3425 transitions. [2021-10-11 02:30:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:33,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2021-10-11 02:30:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:33,072 INFO L225 Difference]: With dead ends: 2774 [2021-10-11 02:30:33,073 INFO L226 Difference]: Without dead ends: 1423 [2021-10-11 02:30:33,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-10-11 02:30:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1352. [2021-10-11 02:30:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:30:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1599 transitions. [2021-10-11 02:30:33,110 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1599 transitions. Word has length 136 [2021-10-11 02:30:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:33,126 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1599 transitions. [2021-10-11 02:30:33,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:33,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1599 transitions. [2021-10-11 02:30:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-10-11 02:30:33,131 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:33,131 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:33,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:33,356 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1676368931, now seen corresponding path program 1 times [2021-10-11 02:30:33,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:33,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92451653] [2021-10-11 02:30:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-10-11 02:30:33,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92451653] [2021-10-11 02:30:33,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780916423] [2021-10-11 02:30:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:33,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:33,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-11 02:30:33,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-11 02:30:34,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:30:34,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:30:34,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221012771] [2021-10-11 02:30:34,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:34,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:34,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:34,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:34,048 INFO L87 Difference]: Start difference. First operand 1352 states and 1599 transitions. Second operand 3 states. [2021-10-11 02:30:34,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:34,452 INFO L93 Difference]: Finished difference Result 3200 states and 3800 transitions. [2021-10-11 02:30:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:34,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2021-10-11 02:30:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:34,462 INFO L225 Difference]: With dead ends: 3200 [2021-10-11 02:30:34,462 INFO L226 Difference]: Without dead ends: 1636 [2021-10-11 02:30:34,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-11 02:30:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1352. [2021-10-11 02:30:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2021-10-11 02:30:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1577 transitions. [2021-10-11 02:30:34,508 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1577 transitions. Word has length 193 [2021-10-11 02:30:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:34,508 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1577 transitions. [2021-10-11 02:30:34,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1577 transitions. [2021-10-11 02:30:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-10-11 02:30:34,513 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:34,514 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:34,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:30:34,740 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:34,740 INFO L82 PathProgramCache]: Analyzing trace with hash -758044968, now seen corresponding path program 1 times [2021-10-11 02:30:34,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:34,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165696155] [2021-10-11 02:30:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-10-11 02:30:34,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165696155] [2021-10-11 02:30:34,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733397185] [2021-10-11 02:30:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:35,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:35,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-10-11 02:30:35,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-10-11 02:30:35,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:30:35,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:30:35,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209246245] [2021-10-11 02:30:35,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:35,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:35,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:35,425 INFO L87 Difference]: Start difference. First operand 1352 states and 1577 transitions. Second operand 3 states. [2021-10-11 02:30:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:35,741 INFO L93 Difference]: Finished difference Result 2488 states and 2904 transitions. [2021-10-11 02:30:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:35,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2021-10-11 02:30:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:35,742 INFO L225 Difference]: With dead ends: 2488 [2021-10-11 02:30:35,742 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:35,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:35,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:35,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 205 [2021-10-11 02:30:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:35,746 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:35,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:35,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:35,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:35,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:36,338 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-10-11 02:30:36,590 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-10-11 02:30:36,593 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:30:36,593 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:30:36,593 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:30:36,594 INFO L262 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:30:36,595 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:30:36,597 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:30:36,597 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:30:36,597 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:30:36,597 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:30:36,598 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:30:36,599 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:30:36,600 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:30:36,600 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:36,600 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:30:36,600 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:30:36,600 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:30:36,602 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (<= ~a16~0 5)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (<= ~a7~0 0)) (.cse8 (<= ~a8~0 13)) (.cse7 (<= ~a8~0 14)) (.cse0 (= ~a21~0 1)) (.cse5 (<= ~a17~0 0)) (.cse6 (= ~a20~0 1)) (.cse9 (<= 5 ~a16~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse3) (and .cse0 .cse1 .cse6 .cse2) (and .cse7 .cse4 .cse3) (and .cse0 .cse6 .cse8) (and .cse8 .cse3) (and .cse5 .cse1 .cse3) (and .cse6 .cse8 .cse2) (and .cse7 .cse0 .cse1 .cse6) (and .cse0 .cse4 .cse2 .cse3) (and .cse0 .cse5 .cse1 .cse6) (and .cse5 .cse8) (and .cse7 .cse0 .cse6 .cse9) (and .cse0 .cse5 .cse6 .cse9))) [2021-10-11 02:30:36,602 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:30:36,602 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:30:36,603 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:30:36,604 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:30:36,605 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:30:36,605 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:30:36,605 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:30:36,605 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:30:36,605 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:30:36,605 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (<= ~a16~0 5)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (<= ~a7~0 0)) (.cse8 (<= ~a8~0 13)) (.cse7 (<= ~a8~0 14)) (.cse0 (= ~a21~0 1)) (.cse5 (<= ~a17~0 0)) (.cse6 (= ~a20~0 1)) (.cse9 (<= 5 ~a16~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse3) (and .cse0 .cse1 .cse6 .cse2) (and .cse7 .cse4 .cse3) (and .cse0 .cse6 .cse8) (and .cse8 .cse3) (and .cse5 .cse1 .cse3) (and .cse6 .cse8 .cse2) (and .cse7 .cse0 .cse1 .cse6) (and .cse0 .cse4 .cse2 .cse3) (and .cse0 .cse5 .cse1 .cse6) (and .cse5 .cse8) (and .cse7 .cse0 .cse6 .cse9) (and .cse0 .cse5 .cse6 .cse9))) [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 471) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:30:36,606 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:30:36,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:36 BoogieIcfgContainer [2021-10-11 02:30:36,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:36,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:36,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:36,651 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:36,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:26" (3/4) ... [2021-10-11 02:30:36,655 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:36,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:30:36,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:30:36,689 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:30:36,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:30:36,847 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08551c66-aeb3-4856-960c-c68ce4778ec0/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:36,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:36,849 INFO L168 Benchmark]: Toolchain (without parser) took 13452.86 ms. Allocated memory was 96.5 MB in the beginning and 325.1 MB in the end (delta: 228.6 MB). Free memory was 61.3 MB in the beginning and 200.7 MB in the end (delta: -139.4 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,849 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 43.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:36,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.49 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 54.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.60 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 49.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,851 INFO L168 Benchmark]: Boogie Preprocessor took 57.22 ms. Allocated memory is still 96.5 MB. Free memory was 49.0 MB in the beginning and 44.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,851 INFO L168 Benchmark]: RCFGBuilder took 2356.34 ms. Allocated memory was 96.5 MB in the beginning and 155.2 MB in the end (delta: 58.7 MB). Free memory was 44.4 MB in the beginning and 97.0 MB in the end (delta: -52.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,851 INFO L168 Benchmark]: TraceAbstraction took 10094.20 ms. Allocated memory was 155.2 MB in the beginning and 325.1 MB in the end (delta: 169.9 MB). Free memory was 95.9 MB in the beginning and 215.4 MB in the end (delta: -119.4 MB). Peak memory consumption was 165.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,852 INFO L168 Benchmark]: Witness Printer took 196.76 ms. Allocated memory is still 325.1 MB. Free memory was 215.4 MB in the beginning and 200.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:36,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 43.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 642.49 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 54.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.60 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 49.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.22 ms. Allocated memory is still 96.5 MB. Free memory was 49.0 MB in the beginning and 44.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2356.34 ms. Allocated memory was 96.5 MB in the beginning and 155.2 MB in the end (delta: 58.7 MB). Free memory was 44.4 MB in the beginning and 97.0 MB in the end (delta: -52.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10094.20 ms. Allocated memory was 155.2 MB in the beginning and 325.1 MB in the end (delta: 169.9 MB). Free memory was 95.9 MB in the beginning and 215.4 MB in the end (delta: -119.4 MB). Peak memory consumption was 165.2 MB. Max. memory is 16.1 GB. * Witness Printer took 196.76 ms. Allocated memory is still 325.1 MB. Free memory was 215.4 MB in the beginning and 200.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 471]: 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: (((((((((((((((a21 == 1 && a7 <= 0) && a17 == 1) && a20 <= 0) || ((a16 <= 5 && a17 <= 0) && a20 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a8 <= 14 && a16 <= 5) && a20 <= 0)) || ((a21 == 1 && a20 == 1) && a8 <= 13)) || (a8 <= 13 && a20 <= 0)) || ((a17 <= 0 && a7 <= 0) && a20 <= 0)) || ((a20 == 1 && a8 <= 13) && a17 == 1)) || (((a8 <= 14 && a21 == 1) && a7 <= 0) && a20 == 1)) || (((a21 == 1 && a16 <= 5) && a17 == 1) && a20 <= 0)) || (((a21 == 1 && a17 <= 0) && a7 <= 0) && a20 == 1)) || (a17 <= 0 && a8 <= 13)) || (((a8 <= 14 && a21 == 1) && a20 == 1) && 5 <= a16)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && 5 <= a16) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((((((a21 == 1 && a7 <= 0) && a17 == 1) && a20 <= 0) || ((a16 <= 5 && a17 <= 0) && a20 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a8 <= 14 && a16 <= 5) && a20 <= 0)) || ((a21 == 1 && a20 == 1) && a8 <= 13)) || (a8 <= 13 && a20 <= 0)) || ((a17 <= 0 && a7 <= 0) && a20 <= 0)) || ((a20 == 1 && a8 <= 13) && a17 == 1)) || (((a8 <= 14 && a21 == 1) && a7 <= 0) && a20 == 1)) || (((a21 == 1 && a16 <= 5) && a17 == 1) && a20 <= 0)) || (((a21 == 1 && a17 <= 0) && a7 <= 0) && a20 == 1)) || (a17 <= 0 && a8 <= 13)) || (((a8 <= 14 && a21 == 1) && a20 == 1) && 5 <= a16)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && 5 <= a16) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 421 SDslu, 40 SDs, 0 SdLazy, 2163 SolverSat, 498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1296 GetRequests, 1273 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 852 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 313 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1324 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1871 NumberOfCodeBlocks, 1871 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2490 ConstructedInterpolants, 0 QuantifiedInterpolants, 731696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1550 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 2099/2111 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...