./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/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_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:43:52,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:43:52,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:43:52,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:43:52,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:43:52,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:43:52,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:43:52,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:43:52,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:43:52,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:43:52,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:43:52,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:43:52,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:43:52,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:43:52,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:43:52,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:43:52,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:43:52,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:43:52,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:43:52,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:43:52,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:43:52,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:43:52,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:43:52,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:43:52,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:43:52,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:43:52,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:43:52,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:43:52,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:43:52,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:43:52,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:43:52,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:43:52,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:43:52,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:43:52,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:43:52,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:43:52,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:43:52,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:43:52,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:43:52,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:43:52,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:43:52,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:43:52,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:43:52,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:43:52,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:43:52,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:43:52,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:43:52,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:43:52,990 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:43:52,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:43:52,991 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:43:52,991 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:43:52,992 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:43:52,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:43:52,993 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:43:52,993 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:43:52,994 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:43:52,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:43:52,994 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:43:52,994 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:43:52,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:43:52,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:43:52,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:43:52,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:43:52,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:43:52,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:43:52,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:43:52,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:43:52,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:43:52,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:43:52,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:43:52,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:43:52,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:43:52,999 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:43:52,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:43:52,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:43:53,000 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:43:53,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:43:53,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:43:53,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:43:53,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2022-11-22 02:43:53,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:43:53,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:43:53,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:43:53,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:43:53,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:43:53,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/../../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 [2022-11-22 02:43:56,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:43:57,073 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:43:57,073 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/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 [2022-11-22 02:43:57,105 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/data/c42d5897e/76feaba0179146ae9325343086a0be78/FLAGb43f9f2a9 [2022-11-22 02:43:57,143 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/data/c42d5897e/76feaba0179146ae9325343086a0be78 [2022-11-22 02:43:57,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:43:57,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:43:57,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:43:57,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:43:57,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:43:57,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:43:57" (1/1) ... [2022-11-22 02:43:57,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796997ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:43:57, skipping insertion in model container [2022-11-22 02:43:57,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:43:57" (1/1) ... [2022-11-22 02:43:57,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:43:57,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:43:59,616 WARN L237 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_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/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] [2022-11-22 02:43:59,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:43:59,739 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:44:00,193 WARN L237 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_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/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] [2022-11-22 02:44:00,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:44:00,316 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:44:00,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00 WrapperNode [2022-11-22 02:44:00,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:44:00,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:44:00,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:44:00,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:44:00,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:00,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:00,757 INFO L138 Inliner]: procedures = 251, calls = 2672, calls flagged for inlining = 117, calls inlined = 112, statements flattened = 6513 [2022-11-22 02:44:00,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:44:00,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:44:00,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:44:00,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:44:00,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:00,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:00,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:00,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:01,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:01,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:01,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:01,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:01,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:44:01,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:44:01,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:44:01,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:44:01,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (1/1) ... [2022-11-22 02:44:01,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:44:01,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:44:01,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:44:01,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:44:01,384 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2022-11-22 02:44:01,384 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2022-11-22 02:44:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2022-11-22 02:44:01,385 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2022-11-22 02:44:01,385 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2022-11-22 02:44:01,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2022-11-22 02:44:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-22 02:44:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-22 02:44:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2022-11-22 02:44:01,386 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2022-11-22 02:44:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2022-11-22 02:44:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2022-11-22 02:44:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2022-11-22 02:44:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2022-11-22 02:44:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2022-11-22 02:44:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2022-11-22 02:44:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:44:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:44:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:44:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:44:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:44:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:44:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:44:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:44:01,389 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2022-11-22 02:44:01,390 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2022-11-22 02:44:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2022-11-22 02:44:01,391 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2022-11-22 02:44:01,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-22 02:44:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-22 02:44:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2022-11-22 02:44:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2022-11-22 02:44:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2022-11-22 02:44:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2022-11-22 02:44:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-22 02:44:01,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-22 02:44:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2022-11-22 02:44:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2022-11-22 02:44:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2022-11-22 02:44:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2022-11-22 02:44:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2022-11-22 02:44:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2022-11-22 02:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2022-11-22 02:44:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2022-11-22 02:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 02:44:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 02:44:01,395 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2022-11-22 02:44:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2022-11-22 02:44:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2022-11-22 02:44:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2022-11-22 02:44:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2022-11-22 02:44:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2022-11-22 02:44:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:44:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:44:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:44:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:44:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2022-11-22 02:44:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2022-11-22 02:44:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2022-11-22 02:44:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2022-11-22 02:44:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2022-11-22 02:44:01,399 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2022-11-22 02:44:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:44:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2022-11-22 02:44:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2022-11-22 02:44:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 02:44:01,400 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2022-11-22 02:44:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2022-11-22 02:44:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:44:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2022-11-22 02:44:01,401 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2022-11-22 02:44:01,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:44:01,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:44:01,402 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2022-11-22 02:44:01,403 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2022-11-22 02:44:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:44:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:44:01,404 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 [2022-11-22 02:44:01,404 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 [2022-11-22 02:44:01,404 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 02:44:01,405 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 02:44:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-22 02:44:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-22 02:44:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 02:44:01,406 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 02:44:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2022-11-22 02:44:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2022-11-22 02:44:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2022-11-22 02:44:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2022-11-22 02:44:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2022-11-22 02:44:01,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2022-11-22 02:44:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:44:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-22 02:44:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-22 02:44:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:44:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2022-11-22 02:44:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2022-11-22 02:44:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2022-11-22 02:44:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2022-11-22 02:44:01,410 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2022-11-22 02:44:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2022-11-22 02:44:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:44:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2022-11-22 02:44:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2022-11-22 02:44:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:44:01,411 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:44:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2022-11-22 02:44:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2022-11-22 02:44:01,412 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2022-11-22 02:44:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2022-11-22 02:44:01,413 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:44:01,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:44:01,417 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2022-11-22 02:44:01,417 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2022-11-22 02:44:01,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:44:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2022-11-22 02:44:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2022-11-22 02:44:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2022-11-22 02:44:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2022-11-22 02:44:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2022-11-22 02:44:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2022-11-22 02:44:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2022-11-22 02:44:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2022-11-22 02:44:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2022-11-22 02:44:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2022-11-22 02:44:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 02:44:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 02:44:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:44:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2022-11-22 02:44:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2022-11-22 02:44:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 02:44:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 02:44:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2022-11-22 02:44:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2022-11-22 02:44:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:44:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2022-11-22 02:44:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2022-11-22 02:44:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:44:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2022-11-22 02:44:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2022-11-22 02:44:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-22 02:44:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-22 02:44:01,431 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2022-11-22 02:44:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2022-11-22 02:44:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2022-11-22 02:44:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2022-11-22 02:44:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:44:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:44:01,432 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-22 02:44:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-22 02:44:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2022-11-22 02:44:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2022-11-22 02:44:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-22 02:44:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-22 02:44:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2022-11-22 02:44:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2022-11-22 02:44:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2022-11-22 02:44:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2022-11-22 02:44:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2022-11-22 02:44:01,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2022-11-22 02:44:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2022-11-22 02:44:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2022-11-22 02:44:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2022-11-22 02:44:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2022-11-22 02:44:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2022-11-22 02:44:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2022-11-22 02:44:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 02:44:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 02:44:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2022-11-22 02:44:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2022-11-22 02:44:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:44:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2022-11-22 02:44:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2022-11-22 02:44:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2022-11-22 02:44:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2022-11-22 02:44:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-22 02:44:01,437 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-22 02:44:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:44:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:44:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 02:44:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 02:44:02,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:44:02,448 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:44:05,405 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:44:32,938 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:44:35,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:44:35,994 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:44:36,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:44:36 BoogieIcfgContainer [2022-11-22 02:44:36,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:44:36,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:44:36,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:44:36,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:44:36,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:43:57" (1/3) ... [2022-11-22 02:44:36,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbf4eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:44:36, skipping insertion in model container [2022-11-22 02:44:36,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:00" (2/3) ... [2022-11-22 02:44:36,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbf4eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:44:36, skipping insertion in model container [2022-11-22 02:44:36,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:44:36" (3/3) ... [2022-11-22 02:44:36,013 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-22 02:44:36,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:44:36,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:44:36,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:44:36,139 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@364e32c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:44:36,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:44:36,149 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) [2022-11-22 02:44:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-22 02:44:36,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:36,183 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:44:36,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:44:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash 530586026, now seen corresponding path program 1 times [2022-11-22 02:44:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:36,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260056271] [2022-11-22 02:44:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-22 02:44:38,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:38,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260056271] [2022-11-22 02:44:38,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260056271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:38,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:38,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:44:38,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146299179] [2022-11-22 02:44:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:44:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:38,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:44:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:44:38,120 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) [2022-11-22 02:44:41,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:43,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:44:44,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:44:47,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:53,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:44:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:44:55,977 INFO L93 Difference]: Finished difference Result 4084 states and 6132 transitions. [2022-11-22 02:44:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:44:55,981 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 [2022-11-22 02:44:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:44:56,018 INFO L225 Difference]: With dead ends: 4084 [2022-11-22 02:44:56,018 INFO L226 Difference]: Without dead ends: 2702 [2022-11-22 02:44:56,029 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:44:56,032 INFO L413 NwaCegarLoop]: 2288 mSDtfsCounter, 1903 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:44:56,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 4182 Invalid, 481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 474 Invalid, 4 Unknown, 0 Unchecked, 17.5s Time] [2022-11-22 02:44:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2022-11-22 02:44:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2697. [2022-11-22 02:44:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1843 states have (on average 1.4248507867607163) internal successors, (2626), 1925 states have internal predecessors, (2626), 698 states have call successors, (698), 158 states have call predecessors, (698), 155 states have return successors, (696), 671 states have call predecessors, (696), 696 states have call successors, (696) [2022-11-22 02:44:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4020 transitions. [2022-11-22 02:44:56,264 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4020 transitions. Word has length 433 [2022-11-22 02:44:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:44:56,270 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4020 transitions. [2022-11-22 02:44:56,271 INFO L496 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) [2022-11-22 02:44:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4020 transitions. [2022-11-22 02:44:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-22 02:44:56,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:44:56,293 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:44:56,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:44:56,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:44:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:44:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash 251718806, now seen corresponding path program 1 times [2022-11-22 02:44:56,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:44:56,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866720746] [2022-11-22 02:44:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:44:56,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:44:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:44:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-22 02:44:57,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:44:57,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866720746] [2022-11-22 02:44:57,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866720746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:44:57,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:44:57,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:44:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105616154] [2022-11-22 02:44:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:44:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:44:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:44:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:44:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:44:57,626 INFO L87 Difference]: Start difference. First operand 2697 states and 4020 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) [2022-11-22 02:44:59,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:01,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:03,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:05,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:08,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:12,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:14,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:15,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:15,958 INFO L93 Difference]: Finished difference Result 5306 states and 7911 transitions. [2022-11-22 02:45:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:15,959 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 [2022-11-22 02:45:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:15,981 INFO L225 Difference]: With dead ends: 5306 [2022-11-22 02:45:15,982 INFO L226 Difference]: Without dead ends: 2698 [2022-11-22 02:45:15,995 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:45:15,996 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 0 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:15,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3849 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 462 Invalid, 5 Unknown, 0 Unchecked, 18.1s Time] [2022-11-22 02:45:16,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-11-22 02:45:16,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2022-11-22 02:45:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 1844 states have (on average 1.4246203904555315) internal successors, (2627), 1926 states have internal predecessors, (2627), 698 states have call successors, (698), 158 states have call predecessors, (698), 155 states have return successors, (696), 671 states have call predecessors, (696), 696 states have call successors, (696) [2022-11-22 02:45:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4021 transitions. [2022-11-22 02:45:16,164 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4021 transitions. Word has length 438 [2022-11-22 02:45:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:16,166 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 4021 transitions. [2022-11-22 02:45:16,166 INFO L496 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) [2022-11-22 02:45:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4021 transitions. [2022-11-22 02:45:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-22 02:45:16,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:16,183 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:45:16,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:45:16,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2147185505, now seen corresponding path program 1 times [2022-11-22 02:45:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430943215] [2022-11-22 02:45:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:16,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-22 02:45:17,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430943215] [2022-11-22 02:45:17,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430943215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:45:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522796477] [2022-11-22 02:45:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:17,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:17,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:45:17,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:45:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:19,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 4777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:45:19,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:45:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4208 trivial. 0 not checked. [2022-11-22 02:45:21,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:45:21,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522796477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:21,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:45:21,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-22 02:45:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798178384] [2022-11-22 02:45:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:21,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:21,412 INFO L87 Difference]: Start difference. First operand 2698 states and 4021 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) [2022-11-22 02:45:22,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:24,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:26,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:29,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:34,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:35,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:36,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:36,932 INFO L93 Difference]: Finished difference Result 7735 states and 11560 transitions. [2022-11-22 02:45:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:36,934 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 [2022-11-22 02:45:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:36,974 INFO L225 Difference]: With dead ends: 7735 [2022-11-22 02:45:36,974 INFO L226 Difference]: Without dead ends: 5120 [2022-11-22 02:45:36,989 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:45:36,990 INFO L413 NwaCegarLoop]: 2353 mSDtfsCounter, 1792 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 4156 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:36,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 4156 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 479 Invalid, 4 Unknown, 0 Unchecked, 15.3s Time] [2022-11-22 02:45:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2022-11-22 02:45:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5100. [2022-11-22 02:45:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 3514 states have (on average 1.4319863403528743) internal successors, (5032), 3673 states have internal predecessors, (5032), 1286 states have call successors, (1286), 306 states have call predecessors, (1286), 299 states have return successors, (1291), 1232 states have call predecessors, (1291), 1283 states have call successors, (1291) [2022-11-22 02:45:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7609 transitions. [2022-11-22 02:45:37,225 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7609 transitions. Word has length 439 [2022-11-22 02:45:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:37,228 INFO L495 AbstractCegarLoop]: Abstraction has 5100 states and 7609 transitions. [2022-11-22 02:45:37,229 INFO L496 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) [2022-11-22 02:45:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7609 transitions. [2022-11-22 02:45:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-22 02:45:37,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:37,248 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:45:37,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:45:37,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:37,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2028091955, now seen corresponding path program 1 times [2022-11-22 02:45:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:37,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195087236] [2022-11-22 02:45:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:37,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:37,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:45:37,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098195600] [2022-11-22 02:45:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:37,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:37,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:45:37,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:45:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:40,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 5566 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:45:40,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:45:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4209 trivial. 0 not checked. [2022-11-22 02:45:40,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:45:40,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:40,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195087236] [2022-11-22 02:45:40,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:45:40,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098195600] [2022-11-22 02:45:40,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098195600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:40,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:40,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:45:40,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087785612] [2022-11-22 02:45:40,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:40,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:40,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:40,324 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) [2022-11-22 02:45:42,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:44,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:47,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:50,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:52,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:54,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:56,237 INFO L93 Difference]: Finished difference Result 8239 states and 12183 transitions. [2022-11-22 02:45:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:56,238 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 [2022-11-22 02:45:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:56,299 INFO L225 Difference]: With dead ends: 8239 [2022-11-22 02:45:56,299 INFO L226 Difference]: Without dead ends: 7538 [2022-11-22 02:45:56,309 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:45:56,310 INFO L413 NwaCegarLoop]: 2245 mSDtfsCounter, 1908 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:56,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 4127 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 5 Unknown, 0 Unchecked, 15.7s Time] [2022-11-22 02:45:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2022-11-22 02:45:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7532. [2022-11-22 02:45:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7532 states, 5203 states have (on average 1.4349413799730923) internal successors, (7466), 5437 states have internal predecessors, (7466), 1887 states have call successors, (1887), 452 states have call predecessors, (1887), 441 states have return successors, (1896), 1807 states have call predecessors, (1896), 1884 states have call successors, (1896) [2022-11-22 02:45:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 11249 transitions. [2022-11-22 02:45:56,708 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 11249 transitions. Word has length 446 [2022-11-22 02:45:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:56,712 INFO L495 AbstractCegarLoop]: Abstraction has 7532 states and 11249 transitions. [2022-11-22 02:45:56,713 INFO L496 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) [2022-11-22 02:45:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 11249 transitions. [2022-11-22 02:45:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-22 02:45:56,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:56,729 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:45:56,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:45:56,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:45:56,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash -57181198, now seen corresponding path program 1 times [2022-11-22 02:45:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:56,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742157834] [2022-11-22 02:45:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:56,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-22 02:45:57,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:57,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742157834] [2022-11-22 02:45:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742157834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:57,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:57,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:45:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854709818] [2022-11-22 02:45:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:57,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:57,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:57,647 INFO L87 Difference]: Start difference. First operand 7532 states and 11249 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) [2022-11-22 02:45:58,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:01,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:03,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:05,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:08,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:10,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:12,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:13,013 INFO L93 Difference]: Finished difference Result 18806 states and 27833 transitions. [2022-11-22 02:46:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:13,013 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 [2022-11-22 02:46:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:13,087 INFO L225 Difference]: With dead ends: 18806 [2022-11-22 02:46:13,088 INFO L226 Difference]: Without dead ends: 11361 [2022-11-22 02:46:13,119 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:46:13,120 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 1134 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 3878 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 528 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2022-11-22 02:46:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11361 states. [2022-11-22 02:46:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11361 to 11348. [2022-11-22 02:46:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11348 states, 7830 states have (on average 1.4309067688378032) internal successors, (11204), 8174 states have internal predecessors, (11204), 2735 states have call successors, (2735), 806 states have call predecessors, (2735), 782 states have return successors, (2755), 2617 states have call predecessors, (2755), 2731 states have call successors, (2755) [2022-11-22 02:46:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 16694 transitions. [2022-11-22 02:46:13,608 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 16694 transitions. Word has length 446 [2022-11-22 02:46:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 11348 states and 16694 transitions. [2022-11-22 02:46:13,610 INFO L496 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) [2022-11-22 02:46:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 16694 transitions. [2022-11-22 02:46:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-22 02:46:13,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:13,616 INFO L195 NwaCegarLoop]: 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, 1] [2022-11-22 02:46:13,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:46:13,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash -212757636, now seen corresponding path program 1 times [2022-11-22 02:46:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:13,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915203085] [2022-11-22 02:46:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-22 02:46:14,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:14,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915203085] [2022-11-22 02:46:14,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915203085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:14,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:14,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:46:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55780419] [2022-11-22 02:46:14,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:14,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:14,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:14,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:14,331 INFO L87 Difference]: Start difference. First operand 11348 states and 16694 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-11-22 02:46:16,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:18,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:21,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:24,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:28,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:31,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:31,690 INFO L93 Difference]: Finished difference Result 29561 states and 43342 transitions. [2022-11-22 02:46:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 457 [2022-11-22 02:46:31,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:31,793 INFO L225 Difference]: With dead ends: 29561 [2022-11-22 02:46:31,794 INFO L226 Difference]: Without dead ends: 18310 [2022-11-22 02:46:31,843 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:46:31,844 INFO L413 NwaCegarLoop]: 3092 mSDtfsCounter, 1523 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 5013 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 5013 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 6 Unknown, 0 Unchecked, 16.8s Time] [2022-11-22 02:46:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18310 states. [2022-11-22 02:46:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18310 to 18260. [2022-11-22 02:46:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18260 states, 12591 states have (on average 1.4247478357556984) internal successors, (17939), 13148 states have internal predecessors, (17939), 4383 states have call successors, (4383), 1319 states have call predecessors, (4383), 1285 states have return successors, (4401), 4182 states have call predecessors, (4401), 4377 states have call successors, (4401) [2022-11-22 02:46:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18260 states to 18260 states and 26723 transitions. [2022-11-22 02:46:32,695 INFO L78 Accepts]: Start accepts. Automaton has 18260 states and 26723 transitions. Word has length 457 [2022-11-22 02:46:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:32,696 INFO L495 AbstractCegarLoop]: Abstraction has 18260 states and 26723 transitions. [2022-11-22 02:46:32,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-11-22 02:46:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 18260 states and 26723 transitions. [2022-11-22 02:46:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-22 02:46:32,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:32,715 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:46:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:46:32,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash 48191363, now seen corresponding path program 1 times [2022-11-22 02:46:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802654100] [2022-11-22 02:46:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:32,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-22 02:46:33,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:33,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802654100] [2022-11-22 02:46:33,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802654100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976999182] [2022-11-22 02:46:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:33,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:33,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:33,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:46:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:36,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 5132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:46:36,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2022-11-22 02:46:36,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:46:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976999182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:36,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:46:36,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 02:46:36,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589899787] [2022-11-22 02:46:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:36,287 INFO L87 Difference]: Start difference. First operand 18260 states and 26723 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) [2022-11-22 02:46:38,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:40,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:42,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:45,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:49,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:51,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:52,693 INFO L93 Difference]: Finished difference Result 36499 states and 53431 transitions. [2022-11-22 02:46:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:52,694 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 [2022-11-22 02:46:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:52,780 INFO L225 Difference]: With dead ends: 36499 [2022-11-22 02:46:52,780 INFO L226 Difference]: Without dead ends: 18336 [2022-11-22 02:46:52,837 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:46:52,838 INFO L413 NwaCegarLoop]: 1929 mSDtfsCounter, 7 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:52,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3850 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 460 Invalid, 5 Unknown, 0 Unchecked, 15.9s Time] [2022-11-22 02:46:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18336 states. [2022-11-22 02:46:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18336 to 18276. [2022-11-22 02:46:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 12607 states have (on average 1.4242087729039423) internal successors, (17955), 13164 states have internal predecessors, (17955), 4383 states have call successors, (4383), 1319 states have call predecessors, (4383), 1285 states have return successors, (4401), 4182 states have call predecessors, (4401), 4377 states have call successors, (4401) [2022-11-22 02:46:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 26739 transitions. [2022-11-22 02:46:53,630 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 26739 transitions. Word has length 491 [2022-11-22 02:46:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:53,632 INFO L495 AbstractCegarLoop]: Abstraction has 18276 states and 26739 transitions. [2022-11-22 02:46:53,632 INFO L496 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) [2022-11-22 02:46:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 26739 transitions. [2022-11-22 02:46:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-22 02:46:53,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:53,647 INFO L195 NwaCegarLoop]: 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] [2022-11-22 02:46:53,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:53,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:53,866 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1338311975, now seen corresponding path program 1 times [2022-11-22 02:46:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:53,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660899398] [2022-11-22 02:46:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:53,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-22 02:46:54,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660899398] [2022-11-22 02:46:54,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660899398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595598748] [2022-11-22 02:46:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:54,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:54,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:54,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:54,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a064efe-331a-41d7-aa3b-6ab52c6d5e50/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:46:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:57,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 5138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:46:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 4217 trivial. 0 not checked. [2022-11-22 02:46:57,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-22 02:46:57,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595598748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:57,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260768498] [2022-11-22 02:46:57,803 INFO L159 IcfgInterpreter]: Started Sifa with 163 locations of interest [2022-11-22 02:46:57,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:57,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:57,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:57,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:47:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:01,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:02,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:02,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:02,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:03,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:04,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:05,143 INFO L217 Elim1Store]: Index analysis took 3408 ms [2022-11-22 02:56:51,145 WARN L233 SmtUtils]: Spent 9.76m on a formula simplification. DAG size of input: 7551 DAG size of output: 1975 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 02:56:51,166 INFO L321 Elim1Store]: treesize reduction 88578, result has 4.1 percent of original size [2022-11-22 02:56:51,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 446 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 1537 case distinctions, treesize of input 2660 treesize of output 6277 [2022-11-22 02:57:03,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:03,484 INFO L217 Elim1Store]: Index analysis took 284 ms [2022-11-22 02:57:03,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 1864 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 387 [2022-11-22 02:57:04,460 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 02:57:04,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:04,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:57:05,120 INFO L217 Elim1Store]: Index analysis took 281 ms [2022-11-22 02:57:05,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 45 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 133 [2022-11-22 02:57:06,290 INFO L350 Elim1Store]: Elim1 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