./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:39:01,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:39:01,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:39:01,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:39:01,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:39:01,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:39:02,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:39:02,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:39:02,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:39:02,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:39:02,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:39:02,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:39:02,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:39:02,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:39:02,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:39:02,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:39:02,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:39:02,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:39:02,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:39:02,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:39:02,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:39:02,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:39:02,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:39:02,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:39:02,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:39:02,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:39:02,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:39:02,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:39:02,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:39:02,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:39:02,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:39:02,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:39:02,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:39:02,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:39:02,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:39:02,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:39:02,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:39:02,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:39:02,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:39:02,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:39:02,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:39:02,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:39:02,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:39:02,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:39:02,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:39:02,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:39:02,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:39:02,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:39:02,076 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:39:02,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:39:02,076 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:39:02,077 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:39:02,077 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:39:02,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:39:02,077 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:39:02,077 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:39:02,078 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:39:02,078 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:39:02,078 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:39:02,078 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:39:02,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:39:02,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:39:02,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:39:02,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:39:02,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:39:02,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:39:02,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:39:02,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:39:02,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:39:02,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:39:02,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:39:02,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:39:02,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:39:02,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:39:02,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:39:02,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:39:02,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:39:02,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:39:02,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:39:02,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:39:02,083 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_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2021-11-25 20:39:02,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:39:02,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:39:02,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:39:02,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:39:02,332 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:39:02,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-25 20:39:02,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/data/1cecef57c/f81c11a1dccb45299a6b5d541c28e11d/FLAG9334b67ba [2021-11-25 20:39:03,482 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:39:03,483 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-25 20:39:03,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/data/1cecef57c/f81c11a1dccb45299a6b5d541c28e11d/FLAG9334b67ba [2021-11-25 20:39:03,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/data/1cecef57c/f81c11a1dccb45299a6b5d541c28e11d [2021-11-25 20:39:03,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:39:03,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:39:03,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:39:03,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:39:03,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:39:03,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:39:03" (1/1) ... [2021-11-25 20:39:03,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678091f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:03, skipping insertion in model container [2021-11-25 20:39:03,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:39:03" (1/1) ... [2021-11-25 20:39:03,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:39:04,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:39:05,644 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_ffbd3560-ba48-4525-9082-38c4a2b341c2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-25 20:39:07,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:39:07,511 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:39:07,726 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_ffbd3560-ba48-4525-9082-38c4a2b341c2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-25 20:39:08,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:39:08,267 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:39:08,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08 WrapperNode [2021-11-25 20:39:08,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:39:08,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:39:08,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:39:08,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:39:08,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:08,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:08,711 INFO L137 Inliner]: procedures = 382, calls = 4296, calls flagged for inlining = 180, calls inlined = 177, statements flattened = 8043 [2021-11-25 20:39:08,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:39:08,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:39:08,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:39:08,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:39:08,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:08,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:08,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:08,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:09,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:09,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:09,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:09,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:39:09,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:39:09,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:39:09,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:39:09,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (1/1) ... [2021-11-25 20:39:09,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:39:09,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:09,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:39:09,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:39:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-25 20:39:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-25 20:39:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2021-11-25 20:39:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2021-11-25 20:39:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-25 20:39:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-25 20:39:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 20:39:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 20:39:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-25 20:39:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-25 20:39:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-25 20:39:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-25 20:39:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-25 20:39:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-25 20:39:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:39:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:39:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-11-25 20:39:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-11-25 20:39:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:39:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:39:09,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:39:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:39:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-25 20:39:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-25 20:39:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 20:39:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 20:39:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-11-25 20:39:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-11-25 20:39:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-11-25 20:39:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-11-25 20:39:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2021-11-25 20:39:09,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2021-11-25 20:39:09,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:39:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:39:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-25 20:39:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-25 20:39:09,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-11-25 20:39:09,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-11-25 20:39:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-25 20:39:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-25 20:39:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-11-25 20:39:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-11-25 20:39:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-11-25 20:39:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-11-25 20:39:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-25 20:39:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-25 20:39:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-25 20:39:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-25 20:39:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-25 20:39:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-25 20:39:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-11-25 20:39:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-11-25 20:39:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-25 20:39:09,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-25 20:39:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-11-25 20:39:09,277 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-11-25 20:39:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-25 20:39:09,277 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-25 20:39:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-11-25 20:39:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-11-25 20:39:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 20:39:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 20:39:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:39:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:39:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:39:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:39:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-25 20:39:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-25 20:39:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:39:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:39:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-25 20:39:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-25 20:39:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:39:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:39:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-25 20:39:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-25 20:39:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-11-25 20:39:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-11-25 20:39:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:39:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:39:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:39:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:39:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:39:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:39:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-25 20:39:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-25 20:39:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-25 20:39:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-25 20:39:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:39:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-25 20:39:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-25 20:39:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-25 20:39:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-25 20:39:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-25 20:39:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-25 20:39:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:39:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-11-25 20:39:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-11-25 20:39:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-25 20:39:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-25 20:39:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-25 20:39:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-25 20:39:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-25 20:39:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-25 20:39:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-25 20:39:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-25 20:39:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-25 20:39:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:39:09,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:39:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:39:09,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:39:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:39:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:39:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-25 20:39:09,286 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-25 20:39:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-11-25 20:39:09,287 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-11-25 20:39:09,287 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-25 20:39:09,287 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-25 20:39:09,287 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 20:39:09,287 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 20:39:09,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2021-11-25 20:39:09,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2021-11-25 20:39:09,288 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:39:09,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:39:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-25 20:39:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-25 20:39:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-25 20:39:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-25 20:39:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:39:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 20:39:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 20:39:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-25 20:39:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-25 20:39:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:39:09,292 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:39:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:39:09,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:39:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-25 20:39:09,292 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-25 20:39:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:39:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-25 20:39:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-25 20:39:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-25 20:39:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-25 20:39:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-11-25 20:39:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-11-25 20:39:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:39:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:39:09,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:39:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-25 20:39:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-25 20:39:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-25 20:39:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-25 20:39:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:39:09,295 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:39:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-25 20:39:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-25 20:39:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-25 20:39:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-25 20:39:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-25 20:39:09,296 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-25 20:39:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-11-25 20:39:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-11-25 20:39:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-25 20:39:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-25 20:39:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-25 20:39:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-25 20:39:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-25 20:39:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-25 20:39:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-25 20:39:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-25 20:39:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-25 20:39:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-25 20:39:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:39:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:39:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:39:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:39:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:39:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-25 20:39:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-25 20:39:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-25 20:39:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-25 20:39:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-25 20:39:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-25 20:39:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:39:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:39:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-25 20:39:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-25 20:39:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-25 20:39:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-25 20:39:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-25 20:39:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-25 20:39:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-25 20:39:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-11-25 20:39:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-11-25 20:39:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:39:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:39:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 20:39:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 20:39:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-25 20:39:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-25 20:39:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-25 20:39:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-25 20:39:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:39:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:39:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:39:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-25 20:39:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-25 20:39:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2021-11-25 20:39:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2021-11-25 20:39:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:39:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:39:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-25 20:39:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-25 20:39:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-25 20:39:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-25 20:39:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-11-25 20:39:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-11-25 20:39:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-25 20:39:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-25 20:39:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-11-25 20:39:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-11-25 20:39:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-25 20:39:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-25 20:39:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-25 20:39:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-25 20:39:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 20:39:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 20:39:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:39:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:39:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:39:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:39:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-25 20:39:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-25 20:39:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-25 20:39:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-25 20:39:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-11-25 20:39:09,310 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-11-25 20:39:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-25 20:39:09,310 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-25 20:39:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-25 20:39:09,311 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-25 20:39:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-25 20:39:09,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-25 20:39:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:39:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-25 20:39:09,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-25 20:39:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-11-25 20:39:09,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-11-25 20:39:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-11-25 20:39:09,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-11-25 20:39:09,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-25 20:39:09,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-25 20:39:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-25 20:39:09,313 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-25 20:39:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 20:39:09,313 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 20:39:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-25 20:39:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:39:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:39:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-25 20:39:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-25 20:39:10,304 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:39:10,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:39:10,669 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:39:18,549 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:39:20,578 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:39:20,578 INFO L301 CfgBuilder]: Removed 81 assume(true) statements. [2021-11-25 20:39:20,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:39:20 BoogieIcfgContainer [2021-11-25 20:39:20,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:39:20,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:39:20,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:39:20,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:39:20,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:39:03" (1/3) ... [2021-11-25 20:39:20,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254b0add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:39:20, skipping insertion in model container [2021-11-25 20:39:20,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:39:08" (2/3) ... [2021-11-25 20:39:20,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254b0add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:39:20, skipping insertion in model container [2021-11-25 20:39:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:39:20" (3/3) ... [2021-11-25 20:39:20,601 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-25 20:39:20,608 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:39:20,608 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:39:20,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:39:20,695 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:39:20,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:39:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) [2021-11-25 20:39:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 20:39:20,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:20,815 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:20,816 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 540936489, now seen corresponding path program 1 times [2021-11-25 20:39:20,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:20,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047939395] [2021-11-25 20:39:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:20,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-25 20:39:21,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047939395] [2021-11-25 20:39:21,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047939395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:21,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:21,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:39:21,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170472826] [2021-11-25 20:39:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:21,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:39:21,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:21,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:39:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:39:21,735 INFO L87 Difference]: Start difference. First operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-25 20:39:25,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:39:27,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:28,715 INFO L93 Difference]: Finished difference Result 8979 states and 14569 transitions. [2021-11-25 20:39:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:39:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 70 [2021-11-25 20:39:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:28,797 INFO L225 Difference]: With dead ends: 8979 [2021-11-25 20:39:28,797 INFO L226 Difference]: Without dead ends: 5786 [2021-11-25 20:39:28,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:39:28,838 INFO L933 BasicCegarLoop]: 5810 mSDtfsCounter, 4557 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 10219 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:28,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4560 Valid, 10219 Invalid, 484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 20:39:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-11-25 20:39:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5785. [2021-11-25 20:39:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 2745 states have (on average 1.2932604735883424) internal successors, (3550), 2886 states have internal predecessors, (3550), 2799 states have call successors, (2799), 241 states have call predecessors, (2799), 240 states have return successors, (2801), 2727 states have call predecessors, (2801), 2798 states have call successors, (2801) [2021-11-25 20:39:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 9150 transitions. [2021-11-25 20:39:30,055 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 9150 transitions. Word has length 70 [2021-11-25 20:39:30,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:30,056 INFO L470 AbstractCegarLoop]: Abstraction has 5785 states and 9150 transitions. [2021-11-25 20:39:30,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-25 20:39:30,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 9150 transitions. [2021-11-25 20:39:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 20:39:30,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:30,065 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:30,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:39:30,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1939261110, now seen corresponding path program 1 times [2021-11-25 20:39:30,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:30,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495440777] [2021-11-25 20:39:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:30,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-25 20:39:30,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:30,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495440777] [2021-11-25 20:39:30,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495440777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:30,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:30,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:39:30,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683429309] [2021-11-25 20:39:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:30,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:39:30,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:39:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:39:30,522 INFO L87 Difference]: Start difference. First operand 5785 states and 9150 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:39:33,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:36,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:39:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:38,318 INFO L93 Difference]: Finished difference Result 11526 states and 18318 transitions. [2021-11-25 20:39:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:39:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2021-11-25 20:39:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:38,610 INFO L225 Difference]: With dead ends: 11526 [2021-11-25 20:39:38,610 INFO L226 Difference]: Without dead ends: 11521 [2021-11-25 20:39:38,621 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 [2021-11-25 20:39:38,623 INFO L933 BasicCegarLoop]: 5990 mSDtfsCounter, 4558 mSDsluCounter, 10850 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 16370 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:38,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4560 Valid, 16370 Invalid, 748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 745 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 20:39:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2021-11-25 20:39:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11510. [2021-11-25 20:39:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 5453 states have (on average 1.2941500091692646) internal successors, (7057), 5736 states have internal predecessors, (7057), 5576 states have call successors, (5576), 481 states have call predecessors, (5576), 480 states have return successors, (5665), 5432 states have call predecessors, (5665), 5575 states have call successors, (5665) [2021-11-25 20:39:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 18298 transitions. [2021-11-25 20:39:40,079 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 18298 transitions. Word has length 73 [2021-11-25 20:39:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:40,083 INFO L470 AbstractCegarLoop]: Abstraction has 11510 states and 18298 transitions. [2021-11-25 20:39:40,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:39:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 18298 transitions. [2021-11-25 20:39:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 20:39:40,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:40,110 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:40,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:39:40,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:40,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1057543957, now seen corresponding path program 1 times [2021-11-25 20:39:40,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:40,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837090691] [2021-11-25 20:39:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:40,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-25 20:39:40,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837090691] [2021-11-25 20:39:40,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837090691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:40,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:40,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:39:40,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652622626] [2021-11-25 20:39:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:40,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:39:40,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:39:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:39:40,821 INFO L87 Difference]: Start difference. First operand 11510 states and 18298 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:39:45,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:39:48,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:39:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:48,998 INFO L93 Difference]: Finished difference Result 31566 states and 50362 transitions. [2021-11-25 20:39:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:39:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2021-11-25 20:39:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:49,262 INFO L225 Difference]: With dead ends: 31566 [2021-11-25 20:39:49,262 INFO L226 Difference]: Without dead ends: 20075 [2021-11-25 20:39:49,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:39:49,415 INFO L933 BasicCegarLoop]: 5493 mSDtfsCounter, 3461 mSDsluCounter, 4520 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 9788 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:49,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3461 Valid, 9788 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 519 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 20:39:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20075 states. [2021-11-25 20:39:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20075 to 20068. [2021-11-25 20:39:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20068 states, 9193 states have (on average 1.2956597411073643) internal successors, (11911), 9642 states have internal predecessors, (11911), 10018 states have call successors, (10018), 857 states have call predecessors, (10018), 856 states have return successors, (10153), 9816 states have call predecessors, (10153), 10017 states have call successors, (10153) [2021-11-25 20:39:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20068 states to 20068 states and 32082 transitions. [2021-11-25 20:39:52,109 INFO L78 Accepts]: Start accepts. Automaton has 20068 states and 32082 transitions. Word has length 130 [2021-11-25 20:39:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:52,110 INFO L470 AbstractCegarLoop]: Abstraction has 20068 states and 32082 transitions. [2021-11-25 20:39:52,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:39:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20068 states and 32082 transitions. [2021-11-25 20:39:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 20:39:52,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:52,135 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:52,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:39:52,136 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:52,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1365914298, now seen corresponding path program 1 times [2021-11-25 20:39:52,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:52,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074300138] [2021-11-25 20:39:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:52,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:52,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:39:52,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306773339] [2021-11-25 20:39:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:52,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:52,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:52,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:52,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:39:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:39:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 4929 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:39:54,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:39:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 20:39:54,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:39:54,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074300138] [2021-11-25 20:39:54,918 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:39:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306773339] [2021-11-25 20:39:54,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306773339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:39:54,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:39:54,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:39:54,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345716509] [2021-11-25 20:39:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:39:54,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:39:54,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:39:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:39:54,922 INFO L87 Difference]: Start difference. First operand 20068 states and 32082 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:40:03,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:05,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:08,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:40:11,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:17,740 INFO L93 Difference]: Finished difference Result 60169 states and 96222 transitions. [2021-11-25 20:40:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:40:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2021-11-25 20:40:17,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:18,041 INFO L225 Difference]: With dead ends: 60169 [2021-11-25 20:40:18,042 INFO L226 Difference]: Without dead ends: 40120 [2021-11-25 20:40:18,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:40:18,173 INFO L933 BasicCegarLoop]: 5793 mSDtfsCounter, 4530 mSDsluCounter, 8103 mSDsCounter, 0 mSdLazyCounter, 6552 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 13217 SdHoareTripleChecker+Invalid, 6571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6552 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:18,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4537 Valid, 13217 Invalid, 6571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6552 Invalid, 4 Unknown, 0 Unchecked, 20.9s Time] [2021-11-25 20:40:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40120 states. [2021-11-25 20:40:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40120 to 40102. [2021-11-25 20:40:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40102 states, 18371 states have (on average 1.2958467149311415) internal successors, (23806), 19270 states have internal predecessors, (23806), 20014 states have call successors, (20014), 1709 states have call predecessors, (20014), 1716 states have return successors, (20311), 19610 states have call predecessors, (20311), 20013 states have call successors, (20311) [2021-11-25 20:40:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40102 states to 40102 states and 64131 transitions. [2021-11-25 20:40:22,568 INFO L78 Accepts]: Start accepts. Automaton has 40102 states and 64131 transitions. Word has length 152 [2021-11-25 20:40:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:22,569 INFO L470 AbstractCegarLoop]: Abstraction has 40102 states and 64131 transitions. [2021-11-25 20:40:22,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:40:22,572 INFO L276 IsEmpty]: Start isEmpty. Operand 40102 states and 64131 transitions. [2021-11-25 20:40:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 20:40:22,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:22,587 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:22,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:22,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:22,805 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -389926971, now seen corresponding path program 1 times [2021-11-25 20:40:22,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534217880] [2021-11-25 20:40:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:22,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:23,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:40:23,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856827424] [2021-11-25 20:40:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:23,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:23,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:23,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:23,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:40:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:24,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 4931 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:40:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 20:40:25,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:40:25,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:25,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534217880] [2021-11-25 20:40:25,170 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:40:25,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856827424] [2021-11-25 20:40:25,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856827424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:25,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:40:25,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:40:25,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576187730] [2021-11-25 20:40:25,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:25,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:40:25,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:40:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:25,171 INFO L87 Difference]: Start difference. First operand 40102 states and 64131 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:40:30,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:32,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:33,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:40:37,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:40:44,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:44,575 INFO L93 Difference]: Finished difference Result 80203 states and 128259 transitions. [2021-11-25 20:40:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:40:44,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2021-11-25 20:40:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:44,993 INFO L225 Difference]: With dead ends: 80203 [2021-11-25 20:40:44,994 INFO L226 Difference]: Without dead ends: 40120 [2021-11-25 20:40:45,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:40:45,206 INFO L933 BasicCegarLoop]: 5793 mSDtfsCounter, 4499 mSDsluCounter, 9567 mSDsCounter, 0 mSdLazyCounter, 6563 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 14678 SdHoareTripleChecker+Invalid, 6579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:45,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4506 Valid, 14678 Invalid, 6579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6563 Invalid, 1 Unknown, 0 Unchecked, 17.4s Time] [2021-11-25 20:40:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40120 states. [2021-11-25 20:40:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40120 to 40102. [2021-11-25 20:40:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40102 states, 18371 states have (on average 1.2958467149311415) internal successors, (23806), 19270 states have internal predecessors, (23806), 20014 states have call successors, (20014), 1709 states have call predecessors, (20014), 1716 states have return successors, (20299), 19610 states have call predecessors, (20299), 20013 states have call successors, (20299) [2021-11-25 20:40:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40102 states to 40102 states and 64119 transitions. [2021-11-25 20:40:48,279 INFO L78 Accepts]: Start accepts. Automaton has 40102 states and 64119 transitions. Word has length 153 [2021-11-25 20:40:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:48,280 INFO L470 AbstractCegarLoop]: Abstraction has 40102 states and 64119 transitions. [2021-11-25 20:40:48,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:40:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 40102 states and 64119 transitions. [2021-11-25 20:40:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-25 20:40:48,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:48,300 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:48,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:48,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:48,516 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2054849153, now seen corresponding path program 1 times [2021-11-25 20:40:48,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:48,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278305115] [2021-11-25 20:40:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:48,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:48,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:40:48,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846504741] [2021-11-25 20:40:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:48,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:48,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:48,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:48,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:40:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:50,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 4933 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:40:50,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 20:40:50,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:40:50,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:50,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278305115] [2021-11-25 20:40:50,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:40:50,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846504741] [2021-11-25 20:40:50,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846504741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:40:50,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:40:50,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:40:50,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67865181] [2021-11-25 20:40:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:40:50,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:40:50,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:40:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:40:50,483 INFO L87 Difference]: Start difference. First operand 40102 states and 64119 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:40:58,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:41:00,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:06,614 INFO L93 Difference]: Finished difference Result 80203 states and 128235 transitions. [2021-11-25 20:41:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:41:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2021-11-25 20:41:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:06,939 INFO L225 Difference]: With dead ends: 80203 [2021-11-25 20:41:06,940 INFO L226 Difference]: Without dead ends: 40120 [2021-11-25 20:41:07,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:41:07,323 INFO L933 BasicCegarLoop]: 5793 mSDtfsCounter, 4528 mSDsluCounter, 8103 mSDsCounter, 0 mSdLazyCounter, 6549 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 13217 SdHoareTripleChecker+Invalid, 6565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:41:07,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4535 Valid, 13217 Invalid, 6565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6549 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2021-11-25 20:41:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40120 states. [2021-11-25 20:41:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40120 to 40102. [2021-11-25 20:41:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40102 states, 18371 states have (on average 1.2958467149311415) internal successors, (23806), 19270 states have internal predecessors, (23806), 20014 states have call successors, (20014), 1709 states have call predecessors, (20014), 1716 states have return successors, (20287), 19610 states have call predecessors, (20287), 20013 states have call successors, (20287) [2021-11-25 20:41:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40102 states to 40102 states and 64107 transitions. [2021-11-25 20:41:10,433 INFO L78 Accepts]: Start accepts. Automaton has 40102 states and 64107 transitions. Word has length 154 [2021-11-25 20:41:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:10,437 INFO L470 AbstractCegarLoop]: Abstraction has 40102 states and 64107 transitions. [2021-11-25 20:41:10,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:41:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 40102 states and 64107 transitions. [2021-11-25 20:41:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-25 20:41:10,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:10,471 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:41:10,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:10,693 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash 66759724, now seen corresponding path program 1 times [2021-11-25 20:41:10,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170336970] [2021-11-25 20:41:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:10,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:10,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:41:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174768347] [2021-11-25 20:41:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:10,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:10,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:10,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:10,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:41:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 4927 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:41:12,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 20:41:12,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:41:12,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:12,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170336970] [2021-11-25 20:41:12,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:41:12,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174768347] [2021-11-25 20:41:12,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174768347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:41:12,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:41:12,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:41:12,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716504102] [2021-11-25 20:41:12,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:41:12,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:41:12,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:41:12,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:12,607 INFO L87 Difference]: Start difference. First operand 40102 states and 64107 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:41:19,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:21,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:23,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:25,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:26,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:30,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:41:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:41:38,011 INFO L93 Difference]: Finished difference Result 100237 states and 160236 transitions. [2021-11-25 20:41:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:41:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 151 [2021-11-25 20:41:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:41:38,426 INFO L225 Difference]: With dead ends: 100237 [2021-11-25 20:41:38,427 INFO L226 Difference]: Without dead ends: 59978 [2021-11-25 20:41:38,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:41:38,644 INFO L933 BasicCegarLoop]: 6624 mSDtfsCounter, 4519 mSDsluCounter, 10451 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 16324 SdHoareTripleChecker+Invalid, 6716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:41:38,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4526 Valid, 16324 Invalid, 6716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6697 Invalid, 4 Unknown, 0 Unchecked, 22.3s Time] [2021-11-25 20:41:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59978 states. [2021-11-25 20:41:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59978 to 59928. [2021-11-25 20:41:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59928 states, 27421 states have (on average 1.2958316618649939) internal successors, (35533), 28770 states have internal predecessors, (35533), 29946 states have call successors, (29946), 2553 states have call predecessors, (29946), 2560 states have return successors, (30333), 29308 states have call predecessors, (30333), 29945 states have call successors, (30333) [2021-11-25 20:41:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59928 states to 59928 states and 95812 transitions. [2021-11-25 20:41:43,441 INFO L78 Accepts]: Start accepts. Automaton has 59928 states and 95812 transitions. Word has length 151 [2021-11-25 20:41:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:41:43,441 INFO L470 AbstractCegarLoop]: Abstraction has 59928 states and 95812 transitions. [2021-11-25 20:41:43,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:41:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 59928 states and 95812 transitions. [2021-11-25 20:41:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-25 20:41:43,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:41:43,484 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:41:43,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:41:43,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:43,697 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:41:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:41:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash 231353531, now seen corresponding path program 1 times [2021-11-25 20:41:43,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:41:43,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929546802] [2021-11-25 20:41:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:43,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:41:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:44,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:41:44,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929546802] [2021-11-25 20:41:44,419 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:41:44,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154896760] [2021-11-25 20:41:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:41:44,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:41:44,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:41:44,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:41:44,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:41:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:41:45,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 4972 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:41:45,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:41:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 20:41:46,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:41:46,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154896760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:41:46,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:41:46,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:41:46,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43660699] [2021-11-25 20:41:46,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:41:46,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:41:46,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:41:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:41:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:41:46,218 INFO L87 Difference]: Start difference. First operand 59928 states and 95812 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:41:53,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:55,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:41:57,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:42:01,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:42:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:42:11,154 INFO L93 Difference]: Finished difference Result 179785 states and 287492 transitions. [2021-11-25 20:42:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:42:11,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2021-11-25 20:42:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:42:12,203 INFO L225 Difference]: With dead ends: 179785 [2021-11-25 20:42:12,203 INFO L226 Difference]: Without dead ends: 119876 [2021-11-25 20:42:12,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:42:12,527 INFO L933 BasicCegarLoop]: 6049 mSDtfsCounter, 4538 mSDsluCounter, 8071 mSDsCounter, 0 mSdLazyCounter, 6569 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 13435 SdHoareTripleChecker+Invalid, 6600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6569 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:42:12,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4545 Valid, 13435 Invalid, 6600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6569 Invalid, 3 Unknown, 0 Unchecked, 19.8s Time] [2021-11-25 20:42:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119876 states. [2021-11-25 20:42:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119876 to 119774. [2021-11-25 20:42:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119774 states, 54751 states have (on average 1.2963050903179851) internal successors, (70974), 57570 states have internal predecessors, (70974), 59878 states have call successors, (59878), 5105 states have call predecessors, (59878), 5144 states have return successors, (60719), 58506 states have call predecessors, (60719), 59877 states have call successors, (60719) [2021-11-25 20:42:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119774 states to 119774 states and 191571 transitions. [2021-11-25 20:42:22,808 INFO L78 Accepts]: Start accepts. Automaton has 119774 states and 191571 transitions. Word has length 166 [2021-11-25 20:42:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:42:22,809 INFO L470 AbstractCegarLoop]: Abstraction has 119774 states and 191571 transitions. [2021-11-25 20:42:22,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:42:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 119774 states and 191571 transitions. [2021-11-25 20:42:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-25 20:42:22,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:42:22,866 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:42:22,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:42:23,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 20:42:23,093 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:42:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:42:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash -704273074, now seen corresponding path program 1 times [2021-11-25 20:42:23,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:42:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860942589] [2021-11-25 20:42:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:23,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:42:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:23,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:42:23,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860942589] [2021-11-25 20:42:23,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:42:23,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013482782] [2021-11-25 20:42:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:42:23,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:42:23,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:42:23,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:42:23,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbd3560-ba48-4525-9082-38c4a2b341c2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:42:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:42:24,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 4976 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:42:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:42:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 20:42:25,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:42:25,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013482782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:42:25,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:42:25,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:42:25,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262894900] [2021-11-25 20:42:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:42:25,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:42:25,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:42:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:42:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:42:25,308 INFO L87 Difference]: Start difference. First operand 119774 states and 191571 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:42:32,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:42:37,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []