./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7 --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 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:26:52,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:26:52,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:26:52,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:26:52,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:26:52,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:26:52,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:26:52,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:26:52,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:26:52,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:26:52,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:26:52,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:26:52,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:26:52,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:26:52,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:26:52,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:26:52,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:26:52,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:26:52,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:26:52,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:26:52,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:26:52,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:26:52,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:26:52,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:26:52,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:26:52,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:26:52,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:26:52,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:26:52,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:26:52,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:26:52,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:26:52,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:26:52,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:26:52,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:26:52,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:26:52,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:26:52,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:26:52,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:26:52,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:26:52,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:26:52,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:26:52,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:26:53,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:26:53,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:26:53,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:26:53,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:26:53,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:26:53,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:26:53,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:26:53,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:26:53,034 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:26:53,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:26:53,035 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:26:53,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:26:53,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:26:53,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:26:53,035 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:26:53,036 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:26:53,036 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:26:53,036 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:26:53,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:26:53,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:26:53,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:26:53,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:26:53,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:26:53,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:26:53,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:26:53,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:26:53,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:26:53,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:26:53,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:26:53,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:53,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:26:53,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:26:53,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:26:53,051 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:26:53,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:26:53,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:26:53,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:26:53,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:26:53,053 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_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-25 19:26:53,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:26:53,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:26:53,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:26:53,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:26:53,330 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:26:53,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-25 19:26:53,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/data/af8344e99/585a8c2fdee647c3b95e7257e593f357/FLAG693d4065b [2021-11-25 19:26:54,413 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:26:54,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-25 19:26:54,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/data/af8344e99/585a8c2fdee647c3b95e7257e593f357/FLAG693d4065b [2021-11-25 19:26:54,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/data/af8344e99/585a8c2fdee647c3b95e7257e593f357 [2021-11-25 19:26:54,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:26:54,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:26:54,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:54,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:26:54,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:26:54,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:54" (1/1) ... [2021-11-25 19:26:54,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f25b40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:54, skipping insertion in model container [2021-11-25 19:26:54,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:54" (1/1) ... [2021-11-25 19:26:54,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:26:54,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:26:57,468 WARN L230 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_1a117465-d846-4567-a6fc-8fba52dd4d22/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-25 19:26:57,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:57,623 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:26:58,206 WARN L230 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_1a117465-d846-4567-a6fc-8fba52dd4d22/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-25 19:26:58,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:58,413 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:26:58,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58 WrapperNode [2021-11-25 19:26:58,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:58,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:58,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:26:58,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:26:58,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:58,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,015 INFO L137 Inliner]: procedures = 251, calls = 2680, calls flagged for inlining = 117, calls inlined = 112, statements flattened = 6571 [2021-11-25 19:26:59,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:59,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:26:59,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:26:59,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:26:59,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:26:59,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:26:59,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:26:59,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:26:59,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (1/1) ... [2021-11-25 19:26:59,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:59,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:59,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:26:59,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:26:59,824 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-25 19:26:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-25 19:26:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2021-11-25 19:26:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2021-11-25 19:26:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2021-11-25 19:26:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2021-11-25 19:26:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-11-25 19:26:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-11-25 19:26:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2021-11-25 19:26:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2021-11-25 19:26:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2021-11-25 19:26:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2021-11-25 19:26:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2021-11-25 19:26:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2021-11-25 19:26:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2021-11-25 19:26:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2021-11-25 19:26:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:26:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:26:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:26:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:26:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:26:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:26:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:26:59,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:26:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2021-11-25 19:26:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2021-11-25 19:26:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2021-11-25 19:26:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2021-11-25 19:26:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 19:26:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 19:26:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-25 19:26:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-25 19:26:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2021-11-25 19:26:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2021-11-25 19:26:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-25 19:26:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-25 19:26:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2021-11-25 19:26:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2021-11-25 19:26:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2021-11-25 19:26:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2021-11-25 19:26:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2021-11-25 19:26:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2021-11-25 19:26:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2021-11-25 19:26:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2021-11-25 19:26:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 19:26:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 19:26:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2021-11-25 19:26:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2021-11-25 19:26:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2021-11-25 19:26:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2021-11-25 19:26:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2021-11-25 19:26:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2021-11-25 19:26:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:26:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:26:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:26:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:26:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2021-11-25 19:26:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2021-11-25 19:26:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2021-11-25 19:26:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2021-11-25 19:26:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2021-11-25 19:26:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2021-11-25 19:26:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:26:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-25 19:26:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-25 19:26:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 19:26:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2021-11-25 19:26:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2021-11-25 19:26:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:26:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2021-11-25 19:26:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2021-11-25 19:26:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:26:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:26:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2021-11-25 19:26:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2021-11-25 19:26:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:26:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:26:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2021-11-25 19:26:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2021-11-25 19:26:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:26:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:26:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-25 19:26:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-25 19:26:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:26:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:26:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-25 19:26:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-25 19:26:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2021-11-25 19:26:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2021-11-25 19:26:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2021-11-25 19:26:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2021-11-25 19:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:26:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 19:26:59,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 19:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2021-11-25 19:26:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2021-11-25 19:26:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2021-11-25 19:26:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2021-11-25 19:26:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2021-11-25 19:26:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2021-11-25 19:26:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:26:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2021-11-25 19:26:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2021-11-25 19:26:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:26:59,852 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:26:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2021-11-25 19:26:59,852 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2021-11-25 19:26:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-25 19:26:59,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-25 19:26:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:26:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:26:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2021-11-25 19:26:59,858 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2021-11-25 19:26:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:26:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2021-11-25 19:26:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2021-11-25 19:26:59,861 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-25 19:26:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-25 19:26:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2021-11-25 19:26:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2021-11-25 19:26:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2021-11-25 19:26:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2021-11-25 19:26:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2021-11-25 19:26:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2021-11-25 19:26:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 19:26:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 19:26:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:26:59,869 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2021-11-25 19:26:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2021-11-25 19:26:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 19:26:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 19:26:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2021-11-25 19:26:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2021-11-25 19:26:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:26:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2021-11-25 19:26:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2021-11-25 19:26:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:26:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2021-11-25 19:26:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2021-11-25 19:26:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-11-25 19:26:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-11-25 19:26:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2021-11-25 19:26:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2021-11-25 19:26:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2021-11-25 19:26:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2021-11-25 19:26:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:26:59,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:26:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2021-11-25 19:26:59,873 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2021-11-25 19:26:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2021-11-25 19:26:59,873 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2021-11-25 19:26:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2021-11-25 19:26:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2021-11-25 19:26:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2021-11-25 19:26:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2021-11-25 19:26:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2021-11-25 19:26:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2021-11-25 19:26:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2021-11-25 19:26:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2021-11-25 19:26:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2021-11-25 19:26:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2021-11-25 19:26:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-25 19:26:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-25 19:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2021-11-25 19:26:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2021-11-25 19:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 19:26:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 19:26:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2021-11-25 19:26:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2021-11-25 19:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2021-11-25 19:26:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2021-11-25 19:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2021-11-25 19:26:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2021-11-25 19:26:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-25 19:26:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-25 19:26:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:26:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:26:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 19:26:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 19:27:00,942 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:27:00,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:27:04,139 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:27:32,582 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:27:36,027 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:27:36,027 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:27:36,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:36 BoogieIcfgContainer [2021-11-25 19:27:36,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:27:36,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:27:36,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:27:36,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:27:36,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:26:54" (1/3) ... [2021-11-25 19:27:36,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f811ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:36, skipping insertion in model container [2021-11-25 19:27:36,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:58" (2/3) ... [2021-11-25 19:27:36,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f811ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:27:36, skipping insertion in model container [2021-11-25 19:27:36,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:27:36" (3/3) ... [2021-11-25 19:27:36,057 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-25 19:27:36,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:27:36,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:27:36,159 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:27:36,172 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:27:36,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:27:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 1457 states, 979 states have (on average 1.4208375893769152) internal successors, (1391), 1030 states have internal predecessors, (1391), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) [2021-11-25 19:27:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-25 19:27:36,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:36,306 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:27:36,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:36,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1138016632, now seen corresponding path program 1 times [2021-11-25 19:27:36,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:36,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256236902] [2021-11-25 19:27:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:36,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2021-11-25 19:27:38,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:38,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256236902] [2021-11-25 19:27:38,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256236902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:27:38,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:27:38,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:27:38,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738942083] [2021-11-25 19:27:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:27:38,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:27:38,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:27:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:27:38,085 INFO L87 Difference]: Start difference. First operand has 1457 states, 979 states have (on average 1.4208375893769152) internal successors, (1391), 1030 states have internal predecessors, (1391), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 19:27:40,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:42,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:27:45,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:47,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:51,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:55,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:56,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:58,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:27:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:58,902 INFO L93 Difference]: Finished difference Result 4082 states and 6131 transitions. [2021-11-25 19:27:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:27:58,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 433 [2021-11-25 19:27:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:58,970 INFO L225 Difference]: With dead ends: 4082 [2021-11-25 19:27:58,970 INFO L226 Difference]: Without dead ends: 2700 [2021-11-25 19:27:58,986 INFO L932 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 [2021-11-25 19:27:58,990 INFO L933 BasicCegarLoop]: 2267 mSDtfsCounter, 1898 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:58,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 4163 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 6 Unknown, 0 Unchecked, 20.5s Time] [2021-11-25 19:27:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2021-11-25 19:27:59,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2695. [2021-11-25 19:27:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 1841 states have (on average 1.4242259641499184) internal successors, (2622), 1923 states have internal predecessors, (2622), 698 states have call successors, (698), 158 states have call predecessors, (698), 155 states have return successors, (699), 671 states have call predecessors, (699), 696 states have call successors, (699) [2021-11-25 19:27:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 4019 transitions. [2021-11-25 19:27:59,349 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 4019 transitions. Word has length 433 [2021-11-25 19:27:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:59,355 INFO L470 AbstractCegarLoop]: Abstraction has 2695 states and 4019 transitions. [2021-11-25 19:27:59,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 19:27:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 4019 transitions. [2021-11-25 19:27:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-25 19:27:59,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:59,386 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:27:59,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:27:59,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:27:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1185889474, now seen corresponding path program 1 times [2021-11-25 19:27:59,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:59,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361245581] [2021-11-25 19:27:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:59,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2021-11-25 19:28:00,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:00,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361245581] [2021-11-25 19:28:00,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361245581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:00,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:00,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:28:00,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710848305] [2021-11-25 19:28:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:00,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:00,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:00,436 INFO L87 Difference]: Start difference. First operand 2695 states and 4019 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 19:28:02,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:04,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:06,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:09,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:11,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:15,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:17,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:18,085 INFO L93 Difference]: Finished difference Result 5302 states and 7909 transitions. [2021-11-25 19:28:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:28:18,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 438 [2021-11-25 19:28:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:18,119 INFO L225 Difference]: With dead ends: 5302 [2021-11-25 19:28:18,119 INFO L226 Difference]: Without dead ends: 2696 [2021-11-25 19:28:18,138 INFO L932 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 [2021-11-25 19:28:18,140 INFO L933 BasicCegarLoop]: 1928 mSDtfsCounter, 0 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:18,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3853 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 455 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2021-11-25 19:28:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2021-11-25 19:28:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2696. [2021-11-25 19:28:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 1842 states have (on average 1.4239956568946797) internal successors, (2623), 1924 states have internal predecessors, (2623), 698 states have call successors, (698), 158 states have call predecessors, (698), 155 states have return successors, (699), 671 states have call predecessors, (699), 696 states have call successors, (699) [2021-11-25 19:28:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 4020 transitions. [2021-11-25 19:28:18,293 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 4020 transitions. Word has length 438 [2021-11-25 19:28:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:18,297 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 4020 transitions. [2021-11-25 19:28:18,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 19:28:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 4020 transitions. [2021-11-25 19:28:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-11-25 19:28:18,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:18,315 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:18,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:28:18,315 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:28:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1488225942, now seen corresponding path program 1 times [2021-11-25 19:28:18,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:18,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15325654] [2021-11-25 19:28:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:18,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2021-11-25 19:28:19,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15325654] [2021-11-25 19:28:19,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15325654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:28:19,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547260476] [2021-11-25 19:28:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:19,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:28:19,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:28:19,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:28:19,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:28:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:21,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 4801 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:28:21,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:28:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4208 trivial. 0 not checked. [2021-11-25 19:28:23,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:28:23,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547260476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:23,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:28:23,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-25 19:28:23,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838740986] [2021-11-25 19:28:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:23,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:23,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:28:23,015 INFO L87 Difference]: Start difference. First operand 2696 states and 4020 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2021-11-25 19:28:25,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:28,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:31,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:33,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:37,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:39,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:28:41,958 INFO L93 Difference]: Finished difference Result 7731 states and 11557 transitions. [2021-11-25 19:28:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:28:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 439 [2021-11-25 19:28:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:28:42,025 INFO L225 Difference]: With dead ends: 7731 [2021-11-25 19:28:42,026 INFO L226 Difference]: Without dead ends: 5118 [2021-11-25 19:28:42,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:28:42,052 INFO L933 BasicCegarLoop]: 2363 mSDtfsCounter, 1794 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:28:42,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1798 Valid, 4168 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 476 Invalid, 5 Unknown, 0 Unchecked, 18.5s Time] [2021-11-25 19:28:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-11-25 19:28:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5100. [2021-11-25 19:28:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 3512 states have (on average 1.4310933940774488) internal successors, (5026), 3671 states have internal predecessors, (5026), 1286 states have call successors, (1286), 308 states have call predecessors, (1286), 301 states have return successors, (1297), 1232 states have call predecessors, (1297), 1283 states have call successors, (1297) [2021-11-25 19:28:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7609 transitions. [2021-11-25 19:28:42,420 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7609 transitions. Word has length 439 [2021-11-25 19:28:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:28:42,423 INFO L470 AbstractCegarLoop]: Abstraction has 5100 states and 7609 transitions. [2021-11-25 19:28:42,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2021-11-25 19:28:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7609 transitions. [2021-11-25 19:28:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-25 19:28:42,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:28:42,452 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:28:42,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:28:42,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:28:42,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:28:42,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:28:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1098604014, now seen corresponding path program 1 times [2021-11-25 19:28:42,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:28:42,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190273365] [2021-11-25 19:28:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:42,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:28:43,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:28:43,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064173194] [2021-11-25 19:28:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:28:43,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:28:43,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:28:43,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:28:43,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:28:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:45,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 5641 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:28:45,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:28:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4209 trivial. 0 not checked. [2021-11-25 19:28:46,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:28:46,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:46,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190273365] [2021-11-25 19:28:46,599 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:28:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064173194] [2021-11-25 19:28:46,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064173194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:28:46,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:28:46,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:28:46,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043077202] [2021-11-25 19:28:46,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:28:46,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:28:46,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:46,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:28:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:28:46,603 INFO L87 Difference]: Start difference. First operand 5100 states and 7609 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-25 19:28:48,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:50,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:52,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:28:54,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:28:57,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:00,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:03,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:05,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:05,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:05,840 INFO L93 Difference]: Finished difference Result 8309 states and 12274 transitions. [2021-11-25 19:29:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:29:05,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 446 [2021-11-25 19:29:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:05,920 INFO L225 Difference]: With dead ends: 8309 [2021-11-25 19:29:05,921 INFO L226 Difference]: Without dead ends: 7608 [2021-11-25 19:29:05,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:29:05,935 INFO L933 BasicCegarLoop]: 2240 mSDtfsCounter, 1905 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 4124 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:05,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 4124 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2021-11-25 19:29:05,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7608 states. [2021-11-25 19:29:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7608 to 7598. [2021-11-25 19:29:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 5238 states have (on average 1.4335624284077892) internal successors, (7509), 5478 states have internal predecessors, (7509), 1901 states have call successors, (1901), 469 states have call predecessors, (1901), 458 states have return successors, (1922), 1817 states have call predecessors, (1922), 1898 states have call successors, (1922) [2021-11-25 19:29:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 11332 transitions. [2021-11-25 19:29:06,622 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 11332 transitions. Word has length 446 [2021-11-25 19:29:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:06,623 INFO L470 AbstractCegarLoop]: Abstraction has 7598 states and 11332 transitions. [2021-11-25 19:29:06,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-25 19:29:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 11332 transitions. [2021-11-25 19:29:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-25 19:29:06,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:06,650 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:06,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:29:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:29:06,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:29:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash -638691073, now seen corresponding path program 1 times [2021-11-25 19:29:06,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:06,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25689303] [2021-11-25 19:29:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:06,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2021-11-25 19:29:07,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:07,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25689303] [2021-11-25 19:29:07,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25689303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:07,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:07,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:29:07,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152619790] [2021-11-25 19:29:07,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:07,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:29:07,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:29:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:29:07,536 INFO L87 Difference]: Start difference. First operand 7598 states and 11332 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:29:08,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:11,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:13,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:29:15,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:17,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:20,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:29:22,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:29:25,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:26,035 INFO L93 Difference]: Finished difference Result 18799 states and 27816 transitions. [2021-11-25 19:29:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:29:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 446 [2021-11-25 19:29:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:26,140 INFO L225 Difference]: With dead ends: 18799 [2021-11-25 19:29:26,140 INFO L226 Difference]: Without dead ends: 11288 [2021-11-25 19:29:26,190 INFO L932 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 [2021-11-25 19:29:26,191 INFO L933 BasicCegarLoop]: 2139 mSDtfsCounter, 1099 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:26,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 3874 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 520 Invalid, 7 Unknown, 0 Unchecked, 18.2s Time] [2021-11-25 19:29:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11288 states. [2021-11-25 19:29:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11288 to 11252. [2021-11-25 19:29:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 7767 states have (on average 1.4310544611819236) internal successors, (11115), 8111 states have internal predecessors, (11115), 2702 states have call successors, (2702), 806 states have call predecessors, (2702), 782 states have return successors, (2754), 2580 states have call predecessors, (2754), 2698 states have call successors, (2754) [2021-11-25 19:29:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 16571 transitions. [2021-11-25 19:29:26,860 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 16571 transitions. Word has length 446 [2021-11-25 19:29:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:26,861 INFO L470 AbstractCegarLoop]: Abstraction has 11252 states and 16571 transitions. [2021-11-25 19:29:26,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 19:29:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 16571 transitions. [2021-11-25 19:29:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-11-25 19:29:26,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:26,869 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:26,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:29:26,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:29:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash 292876286, now seen corresponding path program 1 times [2021-11-25 19:29:26,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:26,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914059141] [2021-11-25 19:29:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:26,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2021-11-25 19:29:27,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914059141] [2021-11-25 19:29:27,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914059141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:27,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:29:27,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:29:27,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884601868] [2021-11-25 19:29:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:27,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:29:27,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:29:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:29:27,460 INFO L87 Difference]: Start difference. First operand 11252 states and 16571 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:29:30,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:29:32,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:29:34,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:37,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:39,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:43,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:45,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:48,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:48,289 INFO L93 Difference]: Finished difference Result 29341 states and 43078 transitions. [2021-11-25 19:29:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:29:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 456 [2021-11-25 19:29:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:48,593 INFO L225 Difference]: With dead ends: 29341 [2021-11-25 19:29:48,593 INFO L226 Difference]: Without dead ends: 18186 [2021-11-25 19:29:48,658 INFO L932 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 [2021-11-25 19:29:48,659 INFO L933 BasicCegarLoop]: 3095 mSDtfsCounter, 1650 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:48,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 4891 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 7 Unknown, 0 Unchecked, 20.4s Time] [2021-11-25 19:29:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18186 states. [2021-11-25 19:29:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18186 to 18142. [2021-11-25 19:29:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18142 states, 12506 states have (on average 1.4237965776427315) internal successors, (17806), 13064 states have internal predecessors, (17806), 4350 states have call successors, (4350), 1319 states have call predecessors, (4350), 1285 states have return successors, (4434), 4145 states have call predecessors, (4434), 4344 states have call successors, (4434) [2021-11-25 19:29:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18142 states to 18142 states and 26590 transitions. [2021-11-25 19:29:49,569 INFO L78 Accepts]: Start accepts. Automaton has 18142 states and 26590 transitions. Word has length 456 [2021-11-25 19:29:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:49,571 INFO L470 AbstractCegarLoop]: Abstraction has 18142 states and 26590 transitions. [2021-11-25 19:29:49,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-25 19:29:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18142 states and 26590 transitions. [2021-11-25 19:29:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-25 19:29:49,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:49,595 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:29:49,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:29:49,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:29:49,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:49,597 INFO L85 PathProgramCache]: Analyzing trace with hash 80312459, now seen corresponding path program 1 times [2021-11-25 19:29:49,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:49,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391744756] [2021-11-25 19:29:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:49,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2021-11-25 19:29:50,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:50,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391744756] [2021-11-25 19:29:50,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391744756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:29:50,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693066406] [2021-11-25 19:29:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:50,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:29:50,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:29:50,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:29:50,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:29:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:52,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 5156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:29:52,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:29:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2021-11-25 19:29:53,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:29:53,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693066406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:53,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:29:53,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 19:29:53,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235821563] [2021-11-25 19:29:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:53,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:29:53,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:29:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:29:53,618 INFO L87 Difference]: Start difference. First operand 18142 states and 26590 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-25 19:29:55,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:57,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:29:59,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:30:01,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:30:04,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:08,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:10,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:30:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:10,955 INFO L93 Difference]: Finished difference Result 36263 states and 53165 transitions. [2021-11-25 19:30:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:30:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 491 [2021-11-25 19:30:10,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:11,076 INFO L225 Difference]: With dead ends: 36263 [2021-11-25 19:30:11,076 INFO L226 Difference]: Without dead ends: 18218 [2021-11-25 19:30:11,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:30:11,283 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 7 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:11,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 3854 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 5 Unknown, 0 Unchecked, 16.9s Time] [2021-11-25 19:30:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18218 states. [2021-11-25 19:30:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18218 to 18158. [2021-11-25 19:30:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18158 states, 12522 states have (on average 1.4232550710749081) internal successors, (17822), 13080 states have internal predecessors, (17822), 4350 states have call successors, (4350), 1319 states have call predecessors, (4350), 1285 states have return successors, (4434), 4145 states have call predecessors, (4434), 4344 states have call successors, (4434) [2021-11-25 19:30:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18158 states to 18158 states and 26606 transitions. [2021-11-25 19:30:12,381 INFO L78 Accepts]: Start accepts. Automaton has 18158 states and 26606 transitions. Word has length 491 [2021-11-25 19:30:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:12,382 INFO L470 AbstractCegarLoop]: Abstraction has 18158 states and 26606 transitions. [2021-11-25 19:30:12,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-25 19:30:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18158 states and 26606 transitions. [2021-11-25 19:30:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-11-25 19:30:12,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:12,406 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:30:12,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:30:12,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:12,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:30:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1525420732, now seen corresponding path program 1 times [2021-11-25 19:30:12,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:12,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111980533] [2021-11-25 19:30:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:12,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2021-11-25 19:30:13,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:13,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111980533] [2021-11-25 19:30:13,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111980533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:30:13,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123455625] [2021-11-25 19:30:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:13,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:13,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:30:13,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:30:13,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a117465-d846-4567-a6fc-8fba52dd4d22/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:30:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:15,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 5162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:30:15,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:30:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 4217 trivial. 0 not checked. [2021-11-25 19:30:16,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:30:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2021-11-25 19:30:17,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123455625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:30:17,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1553547138] [2021-11-25 19:30:17,504 INFO L159 IcfgInterpreter]: Started Sifa with 163 locations of interest [2021-11-25 19:30:17,505 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:30:17,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:30:17,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:30:17,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:30:19,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-25 19:30:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:22,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:22,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:22,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:22,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:23,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:24,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:25,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:25,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:30:25,113 INFO L244 Elim1Store]: Index analysis took 3388 ms