./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--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/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--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS --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 c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:55:26,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:55:26,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:55:26,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:55:26,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:55:26,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:55:26,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:55:26,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:55:26,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:55:26,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:55:26,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:55:26,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:55:26,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:55:26,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:55:26,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:55:26,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:55:27,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:55:27,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:55:27,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:55:27,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:55:27,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:55:27,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:55:27,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:55:27,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:55:27,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:55:27,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:55:27,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:55:27,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:55:27,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:55:27,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:55:27,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:55:27,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:55:27,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:55:27,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:55:27,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:55:27,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:55:27,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:55:27,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:55:27,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:55:27,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:55:27,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:55:27,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:55:27,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:55:27,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:55:27,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:55:27,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:55:27,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:55:27,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:55:27,075 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:55:27,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:55:27,075 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:55:27,076 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:55:27,077 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:55:27,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:55:27,077 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:55:27,077 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:55:27,077 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:55:27,078 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:55:27,078 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:55:27,078 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:55:27,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:55:27,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:55:27,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:55:27,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:55:27,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:55:27,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:55:27,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:55:27,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:55:27,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:55:27,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:55:27,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:55:27,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:55:27,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:55:27,084 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:55:27,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:55:27,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:55:27,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:55:27,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:55:27,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:55:27,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:55:27,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 [2022-11-19 07:55:27,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:55:27,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:55:27,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:55:27,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:55:27,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:55:27,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-19 07:55:27,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/data/85d878f3d/75247008191d4d57be43e2b00d16334a/FLAG8057f31ab [2022-11-19 07:55:28,706 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:55:28,707 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-19 07:55:28,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/data/85d878f3d/75247008191d4d57be43e2b00d16334a/FLAG8057f31ab [2022-11-19 07:55:28,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/data/85d878f3d/75247008191d4d57be43e2b00d16334a [2022-11-19 07:55:28,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:55:28,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:55:28,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:55:28,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:55:28,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:55:28,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:28" (1/1) ... [2022-11-19 07:55:28,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40764211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:28, skipping insertion in model container [2022-11-19 07:55:28,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:28" (1/1) ... [2022-11-19 07:55:28,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:55:29,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:55:30,649 WARN L234 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_1558b86a-608e-4498-8208-91c848517f05/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[204422,204435] [2022-11-19 07:55:32,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:55:32,609 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:55:32,816 WARN L234 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_1558b86a-608e-4498-8208-91c848517f05/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[204422,204435] [2022-11-19 07:55:33,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:55:33,525 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:55:33,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33 WrapperNode [2022-11-19 07:55:33,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:55:33,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:55:33,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:55:33,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:55:33,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:33,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,009 INFO L138 Inliner]: procedures = 423, calls = 5945, calls flagged for inlining = 205, calls inlined = 187, statements flattened = 11608 [2022-11-19 07:55:34,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:55:34,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:55:34,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:55:34,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:55:34,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:55:34,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:55:34,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:55:34,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:55:34,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (1/1) ... [2022-11-19 07:55:34,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:55:34,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:34,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:55:34,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:55:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:55:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:55:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:55:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:55:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_vfta [2022-11-19 07:55:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_vfta [2022-11-19 07:55:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:55:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:55:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_standby_eeprom [2022-11-19 07:55:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_standby_eeprom [2022-11-19 07:55:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_error_detected [2022-11-19 07:55:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_error_detected [2022-11-19 07:55:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:55:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:55:34,732 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:55:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:55:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 07:55:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 07:55:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:55:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:55:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_alloc_rx_buffers [2022-11-19 07:55:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_alloc_rx_buffers [2022-11-19 07:55:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure mac_addr_valid [2022-11-19 07:55:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_addr_valid [2022-11-19 07:55:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_add_vid [2022-11-19 07:55:34,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_add_vid [2022-11-19 07:55:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_tx_resources [2022-11-19 07:55:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_tx_resources [2022-11-19 07:55:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 07:55:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 07:55:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_features [2022-11-19 07:55:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_features [2022-11-19 07:55:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_multi [2022-11-19 07:55:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_multi [2022-11-19 07:55:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_rar_set [2022-11-19 07:55:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_rar_set [2022-11-19 07:55:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:55:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:55:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:55:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:55:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:55:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:55:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:55:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:55:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-19 07:55:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:55:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:55:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:55:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_eeprom_checksum [2022-11-19 07:55:34,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_eeprom_checksum [2022-11-19 07:55:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:55:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:55:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_netpoll [2022-11-19 07:55:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_netpoll [2022-11-19 07:55:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:55:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:55:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:55:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_raise_clock [2022-11-19 07:55:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_raise_clock [2022-11-19 07:55:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_eeprom [2022-11-19 07:55:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_eeprom [2022-11-19 07:55:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:55:34,740 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:55:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_identify_xpak_vendor [2022-11-19 07:55:34,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_identify_xpak_vendor [2022-11-19 07:55:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:55:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_mac_reset [2022-11-19 07:55:34,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_mac_reset [2022-11-19 07:55:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2022-11-19 07:55:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2022-11-19 07:55:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_eeprom [2022-11-19 07:55:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_eeprom [2022-11-19 07:55:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:55:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_rx_resources [2022-11-19 07:55:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_rx_resources [2022-11-19 07:55:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:55:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:55:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-19 07:55:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-19 07:55:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-19 07:55:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-19 07:55:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:55:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:55:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 07:55:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 07:55:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_regs_len [2022-11-19 07:55:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_regs_len [2022-11-19 07:55:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 07:55:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 07:55:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:55:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:55:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_phy_reg [2022-11-19 07:55:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_phy_reg [2022-11-19 07:55:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-19 07:55:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_for_link [2022-11-19 07:55:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_for_link [2022-11-19 07:55:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_option [2022-11-19 07:55:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_option [2022-11-19 07:55:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:55:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 07:55:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 07:55:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:55:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 07:55:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 07:55:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:55:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:55:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:55:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-19 07:55:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-19 07:55:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_lower_clock [2022-11-19 07:55:34,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_lower_clock [2022-11-19 07:55:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_reset [2022-11-19 07:55:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_reset [2022-11-19 07:55:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:55:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:55:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_len [2022-11-19 07:55:34,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_len [2022-11-19 07:55:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_up [2022-11-19 07:55:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_up [2022-11-19 07:55:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_irq_enable [2022-11-19 07:55:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_irq_enable [2022-11-19 07:55:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 07:55:34,750 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 07:55:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:55:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:55:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_tx_resources [2022-11-19 07:55:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_tx_resources [2022-11-19 07:55:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_maybe_stop_tx [2022-11-19 07:55:34,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_maybe_stop_tx [2022-11-19 07:55:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_intr [2022-11-19 07:55:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_intr [2022-11-19 07:55:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:55:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:55:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:55:34,752 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:55:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:55:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:55:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 07:55:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 07:55:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:55:34,753 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:55:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:55:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:55:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:55:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:55:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:55:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:55:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:55:34,754 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:55:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 07:55:34,755 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 07:55:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_update_stats [2022-11-19 07:55:34,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_update_stats [2022-11-19 07:55:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_6 [2022-11-19 07:55:34,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_6 [2022-11-19 07:55:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:55:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:55:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_and_get_eeprom_data [2022-11-19 07:55:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_and_get_eeprom_data [2022-11-19 07:55:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 07:55:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 07:55:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:55:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:55:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:55:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:55:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:55:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:55:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-19 07:55:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-19 07:55:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 07:55:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 07:55:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 07:55:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 07:55:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:55:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:55:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:55:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 07:55:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 07:55:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:55:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:55:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:55:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 07:55:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 07:55:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_kill_vid [2022-11-19 07:55:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_kill_vid [2022-11-19 07:55:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 07:55:34,760 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 07:55:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:55:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_change_mtu [2022-11-19 07:55:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_change_mtu [2022-11-19 07:55:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 07:55:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 07:55:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:55:34,761 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:55:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:55:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:55:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_link_reset [2022-11-19 07:55:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_link_reset [2022-11-19 07:55:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_speed_duplex [2022-11-19 07:55:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_speed_duplex [2022-11-19 07:55:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_fix_features [2022-11-19 07:55:34,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_fix_features [2022-11-19 07:55:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 07:55:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 07:55:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:55:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:55:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_slot_reset [2022-11-19 07:55:34,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_slot_reset [2022-11-19 07:55:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 07:55:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 07:55:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-19 07:55:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-19 07:55:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:55:34,764 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:55:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_unmap_and_free_tx_resource [2022-11-19 07:55:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_unmap_and_free_tx_resource [2022-11-19 07:55:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 07:55:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 07:55:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:55:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:55:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_mac [2022-11-19 07:55:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_mac [2022-11-19 07:55:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:55:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_eeprom [2022-11-19 07:55:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_eeprom [2022-11-19 07:55:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:55:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:55:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_phy_reg [2022-11-19 07:55:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_phy_reg [2022-11-19 07:55:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:55:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:55:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_ee_mac_addr [2022-11-19 07:55:34,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_ee_mac_addr [2022-11-19 07:55:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 07:55:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 07:55:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-19 07:55:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-19 07:55:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_tx_ring [2022-11-19 07:55:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_tx_ring [2022-11-19 07:55:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2022-11-19 07:55:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2022-11-19 07:55:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 07:55:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 07:55:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_rx_ring [2022-11-19 07:55:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_rx_ring [2022-11-19 07:55:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_shift_out_bits [2022-11-19 07:55:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_shift_out_bits [2022-11-19 07:55:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_down [2022-11-19 07:55:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_down [2022-11-19 07:55:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 07:55:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 07:55:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout [2022-11-19 07:55:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout [2022-11-19 07:55:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_rx_resources [2022-11-19 07:55:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_rx_resources [2022-11-19 07:55:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 07:55:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 07:55:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:55:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:55:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_stats [2022-11-19 07:55:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_stats [2022-11-19 07:55:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 07:55:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 07:55:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-19 07:55:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-19 07:55:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:55:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:55:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:55:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-19 07:55:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_data [2022-11-19 07:55:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_data [2022-11-19 07:55:36,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:55:36,146 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:55:36,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:56:06,568 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:56:10,192 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:56:10,193 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:56:10,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:10 BoogieIcfgContainer [2022-11-19 07:56:10,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:56:10,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:56:10,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:56:10,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:56:10,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:28" (1/3) ... [2022-11-19 07:56:10,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:10, skipping insertion in model container [2022-11-19 07:56:10,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:33" (2/3) ... [2022-11-19 07:56:10,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d02d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:10, skipping insertion in model container [2022-11-19 07:56:10,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:10" (3/3) ... [2022-11-19 07:56:10,214 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2022-11-19 07:56:10,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:56:10,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:56:10,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:56:10,380 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54408f50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:56:10,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:56:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 2485 states, 1489 states have (on average 1.2733378106111484) internal successors, (1896), 1524 states have internal predecessors, (1896), 869 states have call successors, (869), 126 states have call predecessors, (869), 125 states have return successors, (861), 856 states have call predecessors, (861), 861 states have call successors, (861) [2022-11-19 07:56:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 07:56:10,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:10,424 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:56:10,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:56:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 501163556, now seen corresponding path program 1 times [2022-11-19 07:56:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:56:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719569041] [2022-11-19 07:56:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:10,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:56:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-19 07:56:11,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:56:11,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719569041] [2022-11-19 07:56:11,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719569041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:56:11,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:56:11,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:56:11,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198226278] [2022-11-19 07:56:11,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:56:11,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:56:11,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:56:11,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:56:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:56:11,824 INFO L87 Difference]: Start difference. First operand has 2485 states, 1489 states have (on average 1.2733378106111484) internal successors, (1896), 1524 states have internal predecessors, (1896), 869 states have call successors, (869), 126 states have call predecessors, (869), 125 states have return successors, (861), 856 states have call predecessors, (861), 861 states have call successors, (861) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:56:13,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:16,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:20,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:27,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:56:27,818 INFO L93 Difference]: Finished difference Result 7368 states and 10793 transitions. [2022-11-19 07:56:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:56:27,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 56 [2022-11-19 07:56:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:56:27,872 INFO L225 Difference]: With dead ends: 7368 [2022-11-19 07:56:27,873 INFO L226 Difference]: Without dead ends: 4832 [2022-11-19 07:56:27,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:56:27,896 INFO L413 NwaCegarLoop]: 4088 mSDtfsCounter, 3510 mSDsluCounter, 3234 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3510 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:56:27,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3510 Valid, 7322 Invalid, 771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 761 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2022-11-19 07:56:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2022-11-19 07:56:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4830. [2022-11-19 07:56:28,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4830 states, 2890 states have (on average 1.2550173010380623) internal successors, (3627), 2939 states have internal predecessors, (3627), 1691 states have call successors, (1691), 249 states have call predecessors, (1691), 248 states have return successors, (1690), 1678 states have call predecessors, (1690), 1690 states have call successors, (1690) [2022-11-19 07:56:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 7008 transitions. [2022-11-19 07:56:28,810 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 7008 transitions. Word has length 56 [2022-11-19 07:56:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:56:28,811 INFO L495 AbstractCegarLoop]: Abstraction has 4830 states and 7008 transitions. [2022-11-19 07:56:28,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-19 07:56:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 7008 transitions. [2022-11-19 07:56:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 07:56:28,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:28,820 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:56:28,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:56:28,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:56:28,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1049303099, now seen corresponding path program 1 times [2022-11-19 07:56:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:56:28,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935998241] [2022-11-19 07:56:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:56:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-19 07:56:30,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:56:30,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935998241] [2022-11-19 07:56:30,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935998241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:56:30,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:56:30,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:56:30,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444416966] [2022-11-19 07:56:30,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:56:30,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:56:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:56:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:56:30,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:56:30,113 INFO L87 Difference]: Start difference. First operand 4830 states and 7008 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:56:31,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:34,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:39,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:41,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:45,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:50,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:56:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:56:50,801 INFO L93 Difference]: Finished difference Result 9615 states and 13986 transitions. [2022-11-19 07:56:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:56:50,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-11-19 07:56:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:56:50,872 INFO L225 Difference]: With dead ends: 9615 [2022-11-19 07:56:50,873 INFO L226 Difference]: Without dead ends: 9610 [2022-11-19 07:56:50,882 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:56:50,883 INFO L413 NwaCegarLoop]: 4078 mSDtfsCounter, 3483 mSDsluCounter, 7252 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 11330 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:56:50,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 11330 Invalid, 1143 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1140 Invalid, 2 Unknown, 0 Unchecked, 20.3s Time] [2022-11-19 07:56:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9610 states. [2022-11-19 07:56:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9610 to 9602. [2022-11-19 07:56:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9602 states, 5743 states have (on average 1.254919031864879) internal successors, (7207), 5840 states have internal predecessors, (7207), 3362 states have call successors, (3362), 497 states have call predecessors, (3362), 496 states have return successors, (3401), 3335 states have call predecessors, (3401), 3361 states have call successors, (3401) [2022-11-19 07:56:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9602 states to 9602 states and 13970 transitions. [2022-11-19 07:56:51,820 INFO L78 Accepts]: Start accepts. Automaton has 9602 states and 13970 transitions. Word has length 58 [2022-11-19 07:56:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:56:51,820 INFO L495 AbstractCegarLoop]: Abstraction has 9602 states and 13970 transitions. [2022-11-19 07:56:51,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:56:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 9602 states and 13970 transitions. [2022-11-19 07:56:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-19 07:56:51,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:51,839 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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] [2022-11-19 07:56:51,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:56:51,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:56:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1196135042, now seen corresponding path program 1 times [2022-11-19 07:56:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:56:51,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107721361] [2022-11-19 07:56:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:56:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-19 07:56:52,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:56:52,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107721361] [2022-11-19 07:56:52,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107721361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:56:52,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:56:52,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:56:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271059251] [2022-11-19 07:56:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:56:52,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:56:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:56:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:56:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:56:52,532 INFO L87 Difference]: Start difference. First operand 9602 states and 13970 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:56:54,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:01,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:03,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:08,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:08,079 INFO L93 Difference]: Finished difference Result 27334 states and 39613 transitions. [2022-11-19 07:57:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2022-11-19 07:57:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:08,191 INFO L225 Difference]: With dead ends: 27334 [2022-11-19 07:57:08,191 INFO L226 Difference]: Without dead ends: 17749 [2022-11-19 07:57:08,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:08,249 INFO L413 NwaCegarLoop]: 3888 mSDtfsCounter, 2918 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 7023 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:08,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2918 Valid, 7023 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 793 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2022-11-19 07:57:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17749 states. [2022-11-19 07:57:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17749 to 17742. [2022-11-19 07:57:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17742 states, 10613 states have (on average 1.2504475643079243) internal successors, (13271), 10788 states have internal predecessors, (13271), 6156 states have call successors, (6156), 973 states have call predecessors, (6156), 972 states have return successors, (6231), 6115 states have call predecessors, (6231), 6155 states have call successors, (6231) [2022-11-19 07:57:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 25658 transitions. [2022-11-19 07:57:09,863 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 25658 transitions. Word has length 142 [2022-11-19 07:57:09,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:09,864 INFO L495 AbstractCegarLoop]: Abstraction has 17742 states and 25658 transitions. [2022-11-19 07:57:09,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:57:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 25658 transitions. [2022-11-19 07:57:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-19 07:57:09,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:09,913 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 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] [2022-11-19 07:57:09,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:57:09,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2104793802, now seen corresponding path program 1 times [2022-11-19 07:57:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523777280] [2022-11-19 07:57:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2022-11-19 07:57:11,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:11,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523777280] [2022-11-19 07:57:11,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523777280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:11,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:11,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:57:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270725595] [2022-11-19 07:57:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:57:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:57:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:57:11,501 INFO L87 Difference]: Start difference. First operand 17742 states and 25658 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:57:13,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:21,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:23,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:26,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:30,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:32,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:35,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:35,464 INFO L93 Difference]: Finished difference Result 26636 states and 38559 transitions. [2022-11-19 07:57:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:57:35,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-11-19 07:57:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:35,630 INFO L225 Difference]: With dead ends: 26636 [2022-11-19 07:57:35,631 INFO L226 Difference]: Without dead ends: 26631 [2022-11-19 07:57:35,653 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:57:35,654 INFO L413 NwaCegarLoop]: 4069 mSDtfsCounter, 3459 mSDsluCounter, 7254 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 11323 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:35,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 11323 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1136 Invalid, 4 Unknown, 0 Unchecked, 23.3s Time] [2022-11-19 07:57:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2022-11-19 07:57:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 26618. [2022-11-19 07:57:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26618 states, 15921 states have (on average 1.250423968343697) internal successors, (19908), 16185 states have internal predecessors, (19908), 9236 states have call successors, (9236), 1461 states have call predecessors, (9236), 1460 states have return successors, (9390), 9175 states have call predecessors, (9390), 9235 states have call successors, (9390) [2022-11-19 07:57:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26618 states to 26618 states and 38534 transitions. [2022-11-19 07:57:37,795 INFO L78 Accepts]: Start accepts. Automaton has 26618 states and 38534 transitions. Word has length 195 [2022-11-19 07:57:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:37,796 INFO L495 AbstractCegarLoop]: Abstraction has 26618 states and 38534 transitions. [2022-11-19 07:57:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:57:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26618 states and 38534 transitions. [2022-11-19 07:57:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-19 07:57:37,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:37,850 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:57:37,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1193598823, now seen corresponding path program 1 times [2022-11-19 07:57:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595205109] [2022-11-19 07:57:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-19 07:57:38,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:38,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595205109] [2022-11-19 07:57:38,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595205109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:38,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:38,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945917267] [2022-11-19 07:57:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:38,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:38,575 INFO L87 Difference]: Start difference. First operand 26618 states and 38534 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-19 07:57:40,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:49,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:53,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:55,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:55,887 INFO L93 Difference]: Finished difference Result 78662 states and 113722 transitions. [2022-11-19 07:57:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 287 [2022-11-19 07:57:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:56,193 INFO L225 Difference]: With dead ends: 78662 [2022-11-19 07:57:56,194 INFO L226 Difference]: Without dead ends: 52069 [2022-11-19 07:57:56,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:56,346 INFO L413 NwaCegarLoop]: 4280 mSDtfsCounter, 3337 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 7431 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:56,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 7431 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 810 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2022-11-19 07:57:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52069 states. [2022-11-19 07:58:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52069 to 52058. [2022-11-19 07:58:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52058 states, 31110 states have (on average 1.2470266795242688) internal successors, (38795), 31626 states have internal predecessors, (38795), 18065 states have call successors, (18065), 2883 states have call predecessors, (18065), 2882 states have return successors, (18339), 17938 states have call predecessors, (18339), 18064 states have call successors, (18339) [2022-11-19 07:58:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52058 states to 52058 states and 75199 transitions. [2022-11-19 07:58:00,611 INFO L78 Accepts]: Start accepts. Automaton has 52058 states and 75199 transitions. Word has length 287 [2022-11-19 07:58:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:00,612 INFO L495 AbstractCegarLoop]: Abstraction has 52058 states and 75199 transitions. [2022-11-19 07:58:00,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-19 07:58:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 52058 states and 75199 transitions. [2022-11-19 07:58:00,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-19 07:58:00,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:00,717 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:00,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:58:00,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:58:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -653110699, now seen corresponding path program 1 times [2022-11-19 07:58:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:00,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075252933] [2022-11-19 07:58:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-19 07:58:02,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:02,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075252933] [2022-11-19 07:58:02,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075252933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:02,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:02,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:58:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741637789] [2022-11-19 07:58:02,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:02,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:02,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:02,069 INFO L87 Difference]: Start difference. First operand 52058 states and 75199 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 07:58:03,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:09,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:11,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:17,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:20,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:21,292 INFO L93 Difference]: Finished difference Result 138158 states and 198950 transitions. [2022-11-19 07:58:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:21,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 298 [2022-11-19 07:58:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:21,748 INFO L225 Difference]: With dead ends: 138158 [2022-11-19 07:58:21,748 INFO L226 Difference]: Without dead ends: 86125 [2022-11-19 07:58:22,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:22,150 INFO L413 NwaCegarLoop]: 4411 mSDtfsCounter, 2716 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 7453 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:22,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 7453 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 929 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2022-11-19 07:58:22,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86125 states. [2022-11-19 07:58:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86125 to 85973. [2022-11-19 07:58:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85973 states, 51006 states have (on average 1.235991844096773) internal successors, (63043), 51873 states have internal predecessors, (63043), 30092 states have call successors, (30092), 4875 states have call predecessors, (30092), 4874 states have return successors, (30450), 29794 states have call predecessors, (30450), 30091 states have call successors, (30450) [2022-11-19 07:58:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85973 states to 85973 states and 123585 transitions. [2022-11-19 07:58:28,666 INFO L78 Accepts]: Start accepts. Automaton has 85973 states and 123585 transitions. Word has length 298 [2022-11-19 07:58:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:28,667 INFO L495 AbstractCegarLoop]: Abstraction has 85973 states and 123585 transitions. [2022-11-19 07:58:28,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 07:58:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 85973 states and 123585 transitions. [2022-11-19 07:58:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-19 07:58:28,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:28,913 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:28,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:58:28,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:58:28,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2007797894, now seen corresponding path program 1 times [2022-11-19 07:58:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:28,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115109752] [2022-11-19 07:58:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2022-11-19 07:58:29,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115109752] [2022-11-19 07:58:29,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115109752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:29,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:29,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:58:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343183187] [2022-11-19 07:58:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:29,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:29,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:29,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:29,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:29,944 INFO L87 Difference]: Start difference. First operand 85973 states and 123585 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-19 07:58:32,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:37,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:42,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:45,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:47,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:53,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:55,862 INFO L93 Difference]: Finished difference Result 216017 states and 310655 transitions. [2022-11-19 07:58:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 338 [2022-11-19 07:58:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:56,612 INFO L225 Difference]: With dead ends: 216017 [2022-11-19 07:58:56,613 INFO L226 Difference]: Without dead ends: 130069 [2022-11-19 07:58:56,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:56,856 INFO L413 NwaCegarLoop]: 5834 mSDtfsCounter, 3417 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 8979 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:56,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3417 Valid, 8979 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1091 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-11-19 07:58:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130069 states. [2022-11-19 07:59:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130069 to 130055. [2022-11-19 07:59:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130055 states, 77208 states have (on average 1.2347166096777535) internal successors, (95330), 78525 states have internal predecessors, (95330), 45497 states have call successors, (45497), 7350 states have call predecessors, (45497), 7349 states have return successors, (46023), 45043 states have call predecessors, (46023), 45496 states have call successors, (46023) [2022-11-19 07:59:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130055 states to 130055 states and 186850 transitions. [2022-11-19 07:59:05,448 INFO L78 Accepts]: Start accepts. Automaton has 130055 states and 186850 transitions. Word has length 338 [2022-11-19 07:59:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:05,448 INFO L495 AbstractCegarLoop]: Abstraction has 130055 states and 186850 transitions. [2022-11-19 07:59:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-19 07:59:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 130055 states and 186850 transitions. [2022-11-19 07:59:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-19 07:59:05,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:05,641 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:59:05,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:59:05,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:05,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash -398370566, now seen corresponding path program 1 times [2022-11-19 07:59:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:05,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894073727] [2022-11-19 07:59:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-11-19 07:59:08,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:08,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894073727] [2022-11-19 07:59:08,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894073727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:08,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735600127] [2022-11-19 07:59:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:08,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:08,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:08,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:08,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1558b86a-608e-4498-8208-91c848517f05/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:59:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:11,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 8617 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:59:11,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-11-19 07:59:11,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:59:11,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735600127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:11,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:59:11,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-19 07:59:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954223772] [2022-11-19 07:59:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:11,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:11,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:11,138 INFO L87 Difference]: Start difference. First operand 130055 states and 186850 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-19 07:59:12,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:14,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:16,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:22,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:30,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:31,775 INFO L93 Difference]: Finished difference Result 173566 states and 250008 transitions. [2022-11-19 07:59:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 338 [2022-11-19 07:59:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:32,631 INFO L225 Difference]: With dead ends: 173566 [2022-11-19 07:59:32,632 INFO L226 Difference]: Without dead ends: 130165 [2022-11-19 07:59:32,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:59:32,860 INFO L413 NwaCegarLoop]: 3180 mSDtfsCounter, 4 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6354 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:32,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6354 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 747 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2022-11-19 07:59:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130165 states. [2022-11-19 07:59:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130165 to 130165. [2022-11-19 07:59:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130165 states, 77296 states have (on average 1.234449389360381) internal successors, (95418), 78635 states have internal predecessors, (95418), 45497 states have call successors, (45497), 7350 states have call predecessors, (45497), 7371 states have return successors, (46045), 45043 states have call predecessors, (46045), 45496 states have call successors, (46045)