./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P --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 f37e3824e515882c7bcf8c367d3f56b0297fad2493f001664c6f9188e65f0eab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:34:51,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:34:51,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:34:51,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:34:51,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:34:51,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:34:51,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:34:51,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:34:51,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:34:51,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:34:51,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:34:51,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:34:51,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:34:51,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:34:51,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:34:51,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:34:51,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:34:51,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:34:51,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:34:51,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:34:51,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:34:51,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:34:51,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:34:51,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:34:51,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:34:51,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:34:51,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:34:51,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:34:51,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:34:51,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:34:51,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:34:51,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:34:51,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:34:51,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:34:51,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:34:51,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:34:51,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:34:51,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:34:51,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:34:51,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:34:51,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:34:51,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:34:51,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:34:51,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:34:51,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:34:51,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:34:51,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:34:51,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:34:51,931 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:34:51,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:34:51,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:34:51,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:34:51,933 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:34:51,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:34:51,934 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:34:51,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:34:51,934 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:34:51,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:34:51,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:34:51,935 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:34:51,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:34:51,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:34:51,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:34:51,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:34:51,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:34:51,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:34:51,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:34:51,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:34:51,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:34:51,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:34:51,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:34:51,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:34:51,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:34:51,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:34:51,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:34:51,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:34:51,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:34:51,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:34:51,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:34:51,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:34:51,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f37e3824e515882c7bcf8c367d3f56b0297fad2493f001664c6f9188e65f0eab [2021-11-21 01:34:52,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:34:52,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:34:52,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:34:52,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:34:52,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:34:52,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i [2021-11-21 01:34:52,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/data/593392989/6c4423762a27494592778064370a3c8f/FLAGe7b050964 [2021-11-21 01:34:53,470 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:34:53,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i [2021-11-21 01:34:53,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/data/593392989/6c4423762a27494592778064370a3c8f/FLAGe7b050964 [2021-11-21 01:34:53,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/data/593392989/6c4423762a27494592778064370a3c8f [2021-11-21 01:34:53,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:34:53,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:34:53,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:34:53,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:34:53,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:34:53,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:34:53" (1/1) ... [2021-11-21 01:34:53,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98cd326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:53, skipping insertion in model container [2021-11-21 01:34:53,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:34:53" (1/1) ... [2021-11-21 01:34:53,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:34:53,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:34:55,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i[213319,213332] [2021-11-21 01:34:55,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:34:55,919 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:34:56,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i[213319,213332] [2021-11-21 01:34:56,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:34:56,544 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:34:56,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56 WrapperNode [2021-11-21 01:34:56,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:34:56,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:34:56,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:34:56,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:34:56,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:56,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:56,829 INFO L137 Inliner]: procedures = 269, calls = 1577, calls flagged for inlining = 115, calls inlined = 90, statements flattened = 3647 [2021-11-21 01:34:56,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:34:56,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:34:56,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:34:56,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:34:56,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:56,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:56,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:56,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:57,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:57,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:57,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:57,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:34:57,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:34:57,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:34:57,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:34:57,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (1/1) ... [2021-11-21 01:34:57,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:34:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:34:57,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:34:57,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:34:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure free_hba [2021-11-21 01:34:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure free_hba [2021-11-21 01:34:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure smart1_submit_command [2021-11-21 01:34:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure smart1_submit_command [2021-11-21 01:34:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2021-11-21 01:34:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2021-11-21 01:34:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:34:57,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:34:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure cpqarray_remove_one [2021-11-21 01:34:57,203 INFO L138 BoogieDeclarations]: Found implementation of procedure cpqarray_remove_one [2021-11-21 01:34:57,204 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_cpqarray_hba [2021-11-21 01:34:57,204 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_cpqarray_hba [2021-11-21 01:34:57,204 INFO L130 BoogieDeclarations]: Found specification of procedure smart4_intr_mask [2021-11-21 01:34:57,204 INFO L138 BoogieDeclarations]: Found implementation of procedure smart4_intr_mask [2021-11-21 01:34:57,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:34:57,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:34:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2021-11-21 01:34:57,205 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2021-11-21 01:34:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure smart2_completed [2021-11-21 01:34:57,205 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2_completed [2021-11-21 01:34:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-21 01:34:57,205 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-21 01:34:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure smart4_intr_pending [2021-11-21 01:34:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure smart4_intr_pending [2021-11-21 01:34:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure smart2e_intr_mask [2021-11-21 01:34:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2e_intr_mask [2021-11-21 01:34:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:34:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:34:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:34:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:34:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2021-11-21 01:34:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2021-11-21 01:34:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:34:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:34:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 01:34:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 01:34:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:34:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:34:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2021-11-21 01:34:57,209 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2021-11-21 01:34:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:34:57,209 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:34:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure start_io [2021-11-21 01:34:57,209 INFO L138 BoogieDeclarations]: Found implementation of procedure start_io [2021-11-21 01:34:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cpqarray_mutex [2021-11-21 01:34:57,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cpqarray_mutex [2021-11-21 01:34:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:34:57,210 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:34:57,211 INFO L130 BoogieDeclarations]: Found specification of procedure smart1_completed [2021-11-21 01:34:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure smart1_completed [2021-11-21 01:34:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cpqarray_mutex [2021-11-21 01:34:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cpqarray_mutex [2021-11-21 01:34:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:34:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:34:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-21 01:34:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-21 01:34:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-21 01:34:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-21 01:34:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure cmd_free [2021-11-21 01:34:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure cmd_free [2021-11-21 01:34:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:34:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:34:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:34:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:34:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure smart4_completed [2021-11-21 01:34:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure smart4_completed [2021-11-21 01:34:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:34:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:34:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:34:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure smart2e_fifo_full [2021-11-21 01:34:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2e_fifo_full [2021-11-21 01:34:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure release_io_mem [2021-11-21 01:34:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure release_io_mem [2021-11-21 01:34:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:34:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:34:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:34:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-21 01:34:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-21 01:34:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 01:34:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 01:34:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure smart2_intr_pending [2021-11-21 01:34:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2_intr_pending [2021-11-21 01:34:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2021-11-21 01:34:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2021-11-21 01:34:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure sendcmd [2021-11-21 01:34:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure sendcmd [2021-11-21 01:34:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:34:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:34:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure get_drv [2021-11-21 01:34:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure get_drv [2021-11-21 01:34:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:34:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:34:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:34:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:34:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:34:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:34:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-21 01:34:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-21 01:34:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure ida_revalidate [2021-11-21 01:34:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_revalidate [2021-11-21 01:34:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:34:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:34:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:34:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:34:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure smart2_submit_command [2021-11-21 01:34:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2_submit_command [2021-11-21 01:34:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:34:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:34:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 01:34:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 01:34:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-21 01:34:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-21 01:34:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure cpqarray_register_ctlr [2021-11-21 01:34:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure cpqarray_register_ctlr [2021-11-21 01:34:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:34:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:34:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:34:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:34:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure ida_ioctl [2021-11-21 01:34:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_ioctl [2021-11-21 01:34:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:34:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure cmd_alloc [2021-11-21 01:34:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure cmd_alloc [2021-11-21 01:34:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure smart2_fifo_full [2021-11-21 01:34:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2_fifo_full [2021-11-21 01:34:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure smart2e_intr_pending [2021-11-21 01:34:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2e_intr_pending [2021-11-21 01:34:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:34:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:34:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure smart1_fifo_full [2021-11-21 01:34:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure smart1_fifo_full [2021-11-21 01:34:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure smart2e_submit_command [2021-11-21 01:34:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2e_submit_command [2021-11-21 01:34:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure smart1_intr_pending [2021-11-21 01:34:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure smart1_intr_pending [2021-11-21 01:34:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure get_host [2021-11-21 01:34:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure get_host [2021-11-21 01:34:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure smart4_submit_command [2021-11-21 01:34:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure smart4_submit_command [2021-11-21 01:34:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:34:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:34:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-11-21 01:34:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-11-21 01:34:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:34:57,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:34:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:34:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:34:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:34:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-21 01:34:57,279 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-21 01:34:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure removeQ [2021-11-21 01:34:57,280 INFO L138 BoogieDeclarations]: Found implementation of procedure removeQ [2021-11-21 01:34:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:34:57,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:34:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:34:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:34:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:34:57,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:34:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:34:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:34:57,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:34:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure smart1_intr_mask [2021-11-21 01:34:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure smart1_intr_mask [2021-11-21 01:34:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:34:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:34:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:34:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 01:34:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:34:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:34:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure smart2_intr_mask [2021-11-21 01:34:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2_intr_mask [2021-11-21 01:34:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure getgeometry [2021-11-21 01:34:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getgeometry [2021-11-21 01:34:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure ida_getgeo [2021-11-21 01:34:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_getgeo [2021-11-21 01:34:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-11-21 01:34:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-11-21 01:34:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure smart4_fifo_full [2021-11-21 01:34:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure smart4_fifo_full [2021-11-21 01:34:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2021-11-21 01:34:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2021-11-21 01:34:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 01:34:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 01:34:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:34:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:34:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:34:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:34:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-21 01:34:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-21 01:34:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:34:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:34:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:34:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-21 01:34:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-11-21 01:34:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure smart2e_completed [2021-11-21 01:34:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure smart2e_completed [2021-11-21 01:34:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:34:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:34:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure addQ [2021-11-21 01:34:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure addQ [2021-11-21 01:34:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:34:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:34:58,080 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:34:58,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:35:03,058 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:35:04,367 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:35:04,368 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:35:04,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:04 BoogieIcfgContainer [2021-11-21 01:35:04,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:35:04,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:35:04,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:35:04,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:35:04,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:34:53" (1/3) ... [2021-11-21 01:35:04,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ce965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:04, skipping insertion in model container [2021-11-21 01:35:04,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:34:56" (2/3) ... [2021-11-21 01:35:04,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ce965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:04, skipping insertion in model container [2021-11-21 01:35:04,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:04" (3/3) ... [2021-11-21 01:35:04,387 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--cpqarray.ko-main.cil.out.i [2021-11-21 01:35:04,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:35:04,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:35:04,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:35:04,470 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:35:04,470 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:35:04,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 1011 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 657 states have internal predecessors, (854), 284 states have call successors, (284), 95 states have call predecessors, (284), 95 states have return successors, (284), 278 states have call predecessors, (284), 284 states have call successors, (284) [2021-11-21 01:35:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:35:04,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:04,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:04,527 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1087491975, now seen corresponding path program 1 times [2021-11-21 01:35:04,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:04,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395926922] [2021-11-21 01:35:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:04,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:05,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:05,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395926922] [2021-11-21 01:35:05,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395926922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:05,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:05,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:05,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089533334] [2021-11-21 01:35:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:05,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:05,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:05,170 INFO L87 Difference]: Start difference. First operand has 1011 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 657 states have internal predecessors, (854), 284 states have call successors, (284), 95 states have call predecessors, (284), 95 states have return successors, (284), 278 states have call predecessors, (284), 284 states have call successors, (284) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:07,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:10,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:12,436 INFO L93 Difference]: Finished difference Result 2748 states and 3865 transitions. [2021-11-21 01:35:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:35:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:12,483 INFO L225 Difference]: With dead ends: 2748 [2021-11-21 01:35:12,483 INFO L226 Difference]: Without dead ends: 1728 [2021-11-21 01:35:12,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:12,502 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 1004 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:12,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 2647 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-21 01:35:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-11-21 01:35:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1714. [2021-11-21 01:35:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1071 states have (on average 1.3529411764705883) internal successors, (1449), 1114 states have internal predecessors, (1449), 474 states have call successors, (474), 169 states have call predecessors, (474), 168 states have return successors, (468), 454 states have call predecessors, (468), 468 states have call successors, (468) [2021-11-21 01:35:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2391 transitions. [2021-11-21 01:35:12,749 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2391 transitions. Word has length 12 [2021-11-21 01:35:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:12,749 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2391 transitions. [2021-11-21 01:35:12,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2391 transitions. [2021-11-21 01:35:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:35:12,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:12,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:12,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:35:12,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1910046142, now seen corresponding path program 1 times [2021-11-21 01:35:12,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:12,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017394006] [2021-11-21 01:35:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:12,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:13,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:13,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017394006] [2021-11-21 01:35:13,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017394006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:13,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:13,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:13,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319446571] [2021-11-21 01:35:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:13,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:13,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:13,046 INFO L87 Difference]: Start difference. First operand 1714 states and 2391 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:16,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:18,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:18,903 INFO L93 Difference]: Finished difference Result 2102 states and 2870 transitions. [2021-11-21 01:35:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 01:35:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:18,926 INFO L225 Difference]: With dead ends: 2102 [2021-11-21 01:35:18,926 INFO L226 Difference]: Without dead ends: 2098 [2021-11-21 01:35:18,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:18,930 INFO L933 BasicCegarLoop]: 1400 mSDtfsCounter, 1053 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:18,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 2102 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-21 01:35:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2021-11-21 01:35:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2096. [2021-11-21 01:35:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1291 states have (on average 1.3292021688613478) internal successors, (1716), 1342 states have internal predecessors, (1716), 576 states have call successors, (576), 229 states have call predecessors, (576), 228 states have return successors, (572), 552 states have call predecessors, (572), 572 states have call successors, (572) [2021-11-21 01:35:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2864 transitions. [2021-11-21 01:35:19,070 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2864 transitions. Word has length 20 [2021-11-21 01:35:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:19,071 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 2864 transitions. [2021-11-21 01:35:19,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2864 transitions. [2021-11-21 01:35:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:35:19,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:19,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:19,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:35:19,081 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:19,082 INFO L85 PathProgramCache]: Analyzing trace with hash 917564299, now seen corresponding path program 1 times [2021-11-21 01:35:19,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:19,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138642065] [2021-11-21 01:35:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:19,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:19,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:19,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138642065] [2021-11-21 01:35:19,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138642065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:19,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:19,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:19,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499823627] [2021-11-21 01:35:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:19,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:19,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:19,296 INFO L87 Difference]: Start difference. First operand 2096 states and 2864 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:23,937 INFO L93 Difference]: Finished difference Result 2674 states and 3541 transitions. [2021-11-21 01:35:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:23,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-21 01:35:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:23,960 INFO L225 Difference]: With dead ends: 2674 [2021-11-21 01:35:23,962 INFO L226 Difference]: Without dead ends: 2671 [2021-11-21 01:35:23,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:23,968 INFO L933 BasicCegarLoop]: 1387 mSDtfsCounter, 1327 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:23,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 1706 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 01:35:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2021-11-21 01:35:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2665. [2021-11-21 01:35:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 1598 states have (on average 1.2891113892365458) internal successors, (2060), 1660 states have internal predecessors, (2060), 731 states have call successors, (731), 336 states have call predecessors, (731), 335 states have return successors, (728), 696 states have call predecessors, (728), 728 states have call successors, (728) [2021-11-21 01:35:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3519 transitions. [2021-11-21 01:35:24,156 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3519 transitions. Word has length 21 [2021-11-21 01:35:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:24,157 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 3519 transitions. [2021-11-21 01:35:24,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3519 transitions. [2021-11-21 01:35:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:35:24,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:24,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:24,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:35:24,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1620820379, now seen corresponding path program 1 times [2021-11-21 01:35:24,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900866931] [2021-11-21 01:35:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:24,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:24,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900866931] [2021-11-21 01:35:24,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900866931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:24,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:24,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:24,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807646552] [2021-11-21 01:35:24,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:24,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:24,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:24,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:24,385 INFO L87 Difference]: Start difference. First operand 2665 states and 3519 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:27,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:29,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:31,471 INFO L93 Difference]: Finished difference Result 5325 states and 7030 transitions. [2021-11-21 01:35:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-21 01:35:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:31,511 INFO L225 Difference]: With dead ends: 5325 [2021-11-21 01:35:31,512 INFO L226 Difference]: Without dead ends: 5322 [2021-11-21 01:35:31,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:31,517 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 1376 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:31,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 2712 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 01:35:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2021-11-21 01:35:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5317. [2021-11-21 01:35:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 3189 states have (on average 1.2894324239573534) internal successors, (4112), 3313 states have internal predecessors, (4112), 1457 states have call successors, (1457), 671 states have call predecessors, (1457), 670 states have return successors, (1454), 1388 states have call predecessors, (1454), 1454 states have call successors, (1454) [2021-11-21 01:35:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 7023 transitions. [2021-11-21 01:35:32,011 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 7023 transitions. Word has length 22 [2021-11-21 01:35:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:32,011 INFO L470 AbstractCegarLoop]: Abstraction has 5317 states and 7023 transitions. [2021-11-21 01:35:32,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 7023 transitions. [2021-11-21 01:35:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:35:32,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:32,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:32,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:35:32,016 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1293638094, now seen corresponding path program 1 times [2021-11-21 01:35:32,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:32,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880133325] [2021-11-21 01:35:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:32,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:32,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:32,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880133325] [2021-11-21 01:35:32,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880133325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:32,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:32,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:32,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893057086] [2021-11-21 01:35:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:32,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:32,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:32,216 INFO L87 Difference]: Start difference. First operand 5317 states and 7023 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:34,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:36,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:37,072 INFO L93 Difference]: Finished difference Result 5331 states and 7062 transitions. [2021-11-21 01:35:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 01:35:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:37,117 INFO L225 Difference]: With dead ends: 5331 [2021-11-21 01:35:37,118 INFO L226 Difference]: Without dead ends: 5304 [2021-11-21 01:35:37,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:37,123 INFO L933 BasicCegarLoop]: 1386 mSDtfsCounter, 1323 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:37,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 1705 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 01:35:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2021-11-21 01:35:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 5286. [2021-11-21 01:35:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 3167 states have (on average 1.2876539311651405) internal successors, (4078), 3286 states have internal predecessors, (4078), 1449 states have call successors, (1449), 670 states have call predecessors, (1449), 669 states have return successors, (1447), 1383 states have call predecessors, (1447), 1447 states have call successors, (1447) [2021-11-21 01:35:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 6974 transitions. [2021-11-21 01:35:37,565 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 6974 transitions. Word has length 23 [2021-11-21 01:35:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 5286 states and 6974 transitions. [2021-11-21 01:35:37,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 6974 transitions. [2021-11-21 01:35:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-21 01:35:37,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:37,575 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:35:37,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:35:37,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash -199610336, now seen corresponding path program 1 times [2021-11-21 01:35:37,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:37,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068832097] [2021-11-21 01:35:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:37,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:37,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068832097] [2021-11-21 01:35:37,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068832097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:37,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:37,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:37,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283126422] [2021-11-21 01:35:37,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:37,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:37,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:37,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:37,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:37,761 INFO L87 Difference]: Start difference. First operand 5286 states and 6974 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:35:40,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:43,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:47,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:47,673 INFO L93 Difference]: Finished difference Result 10587 states and 13963 transitions. [2021-11-21 01:35:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-21 01:35:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:47,714 INFO L225 Difference]: With dead ends: 10587 [2021-11-21 01:35:47,714 INFO L226 Difference]: Without dead ends: 5296 [2021-11-21 01:35:47,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:47,742 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 12 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:47,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3654 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 542 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2021-11-21 01:35:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2021-11-21 01:35:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 5284. [2021-11-21 01:35:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5284 states, 3167 states have (on average 1.2867066624565835) internal successors, (4075), 3286 states have internal predecessors, (4075), 1448 states have call successors, (1448), 669 states have call predecessors, (1448), 668 states have return successors, (1446), 1382 states have call predecessors, (1446), 1446 states have call successors, (1446) [2021-11-21 01:35:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 6969 transitions. [2021-11-21 01:35:48,195 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 6969 transitions. Word has length 40 [2021-11-21 01:35:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:48,198 INFO L470 AbstractCegarLoop]: Abstraction has 5284 states and 6969 transitions. [2021-11-21 01:35:48,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:35:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 6969 transitions. [2021-11-21 01:35:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 01:35:48,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:48,206 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:35:48,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:35:48,207 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1792933365, now seen corresponding path program 1 times [2021-11-21 01:35:48,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:48,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384487517] [2021-11-21 01:35:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:48,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:48,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:48,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384487517] [2021-11-21 01:35:48,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384487517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:48,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:48,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:48,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625496664] [2021-11-21 01:35:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:48,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:48,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:48,381 INFO L87 Difference]: Start difference. First operand 5284 states and 6969 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:35:50,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:52,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:55,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:56,814 INFO L93 Difference]: Finished difference Result 10570 states and 13943 transitions. [2021-11-21 01:35:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:56,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-21 01:35:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:56,855 INFO L225 Difference]: With dead ends: 10570 [2021-11-21 01:35:56,855 INFO L226 Difference]: Without dead ends: 5287 [2021-11-21 01:35:56,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:56,882 INFO L933 BasicCegarLoop]: 1217 mSDtfsCounter, 0 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:56,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2433 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 01:35:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-11-21 01:35:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 5287. [2021-11-21 01:35:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 3170 states have (on average 1.2864353312302839) internal successors, (4078), 3289 states have internal predecessors, (4078), 1448 states have call successors, (1448), 669 states have call predecessors, (1448), 668 states have return successors, (1446), 1382 states have call predecessors, (1446), 1446 states have call successors, (1446) [2021-11-21 01:35:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 6972 transitions. [2021-11-21 01:35:57,239 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 6972 transitions. Word has length 45 [2021-11-21 01:35:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:57,241 INFO L470 AbstractCegarLoop]: Abstraction has 5287 states and 6972 transitions. [2021-11-21 01:35:57,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:35:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 6972 transitions. [2021-11-21 01:35:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 01:35:57,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:57,245 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:35:57,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:35:57,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1950333678, now seen corresponding path program 1 times [2021-11-21 01:35:57,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:57,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642034932] [2021-11-21 01:35:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:57,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:57,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:57,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642034932] [2021-11-21 01:35:57,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642034932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:57,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612507153] [2021-11-21 01:35:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:57,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:57,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:57,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96d763d1-db34-4d55-89a9-9876eeac7615/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:35:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:58,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:35:58,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:58,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:58,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612507153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:35:58,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298044621] [2021-11-21 01:35:58,529 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-21 01:35:58,529 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:35:58,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:35:58,541 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:35:58,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:36:02,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 652 treesize of output 542 [2021-11-21 01:36:20,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 646 treesize of output 536