./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/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_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/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_12101209-e3c4-46bd-a447-b9a03bee3259/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 0f420ae29f1d217fd86475befc2729bf689978fed36c08e1357ee5c24faa0f48 --- 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 07:57:14,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:57:14,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:57:14,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:57:14,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:57:14,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:57:14,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:57:14,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:57:14,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:57:14,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:57:14,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:57:14,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:57:14,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:57:14,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:57:14,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:57:14,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:57:14,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:57:14,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:57:14,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:57:14,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:57:14,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:57:14,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:57:14,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:57:14,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:57:14,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:57:14,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:57:14,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:57:14,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:57:14,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:57:14,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:57:14,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:57:14,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:57:14,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:57:14,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:57:14,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:57:14,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:57:14,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:57:14,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:57:14,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:57:14,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:57:14,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:57:14,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:57:14,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:57:14,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:57:14,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:57:14,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:57:14,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:57:14,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:57:14,773 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:57:14,773 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:57:14,773 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:57:14,773 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:57:14,775 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:57:14,775 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:57:14,775 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:57:14,775 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:57:14,776 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:57:14,776 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:57:14,776 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:57:14,776 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:57:14,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:57:14,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:57:14,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:57:14,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:57:14,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:57:14,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:57:14,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:57:14,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:57:14,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:57:14,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:57:14,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:57:14,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:14,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:57:14,782 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:57:14,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:57:14,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:57:14,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:57:14,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:57:14,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:57:14,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:57:14,784 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_12101209-e3c4-46bd-a447-b9a03bee3259/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f420ae29f1d217fd86475befc2729bf689978fed36c08e1357ee5c24faa0f48 [2022-11-19 07:57:15,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:57:15,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:57:15,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:57:15,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:57:15,163 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:57:15,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:57:15,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/data/d57b77f6e/6f9412e85ff240c29d2ddbeca8ba930c/FLAGe71b9c2d5 [2022-11-19 07:57:16,375 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:57:16,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:57:16,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/data/d57b77f6e/6f9412e85ff240c29d2ddbeca8ba930c/FLAGe71b9c2d5 [2022-11-19 07:57:16,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/data/d57b77f6e/6f9412e85ff240c29d2ddbeca8ba930c [2022-11-19 07:57:16,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:57:16,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:57:16,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:16,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:57:16,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:57:16,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:16" (1/1) ... [2022-11-19 07:57:16,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b464162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:16, skipping insertion in model container [2022-11-19 07:57:16,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:16" (1/1) ... [2022-11-19 07:57:16,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:57:16,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:57:19,612 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_12101209-e3c4-46bd-a447-b9a03bee3259/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[238753,238766] [2022-11-19 07:57:19,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:19,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:57:20,245 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_12101209-e3c4-46bd-a447-b9a03bee3259/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[238753,238766] [2022-11-19 07:57:20,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:20,386 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:57:20,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20 WrapperNode [2022-11-19 07:57:20,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:20,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:20,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:57:20,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:57:20,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:20,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:20,807 INFO L138 Inliner]: procedures = 257, calls = 1816, calls flagged for inlining = 103, calls inlined = 99, statements flattened = 4574 [2022-11-19 07:57:20,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:20,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:57:20,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:57:20,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:57:20,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:20,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:20,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:20,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:21,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:21,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:21,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:21,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:21,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:57:21,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:57:21,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:57:21,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:57:21,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (1/1) ... [2022-11-19 07:57:21,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:21,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:21,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:57:21,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:57:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:57:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:57:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:57:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:57:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:57:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:57:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:57:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:57:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2022-11-19 07:57:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2022-11-19 07:57:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_11 [2022-11-19 07:57:21,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_11 [2022-11-19 07:57:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2022-11-19 07:57:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2022-11-19 07:57:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2022-11-19 07:57:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2022-11-19 07:57:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-19 07:57:21,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-19 07:57:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-19 07:57:21,274 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-19 07:57:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:57:21,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:57:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-19 07:57:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-19 07:57:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 07:57:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 07:57:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2022-11-19 07:57:21,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2022-11-19 07:57:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:57:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:57:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:57:21,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:57:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:57:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:57:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_49 [2022-11-19 07:57:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_49 [2022-11-19 07:57:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:57:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:57:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2022-11-19 07:57:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2022-11-19 07:57:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-19 07:57:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-19 07:57:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2022-11-19 07:57:21,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2022-11-19 07:57:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 07:57:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-19 07:57:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2022-11-19 07:57:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2022-11-19 07:57:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2022-11-19 07:57:21,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2022-11-19 07:57:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_26 [2022-11-19 07:57:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_26 [2022-11-19 07:57:21,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:57:21,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2022-11-19 07:57:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2022-11-19 07:57:21,371 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:57:21,371 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:57:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-19 07:57:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-19 07:57:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:57:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2022-11-19 07:57:21,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2022-11-19 07:57:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 07:57:21,383 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 07:57:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2022-11-19 07:57:21,383 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2022-11-19 07:57:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2022-11-19 07:57:21,383 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2022-11-19 07:57:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-11-19 07:57:21,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-11-19 07:57:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-19 07:57:21,386 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-19 07:57:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:57:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:57:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:57:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:57:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:57:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:57:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2022-11-19 07:57:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2022-11-19 07:57:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 07:57:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 07:57:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:57:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:57:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2022-11-19 07:57:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2022-11-19 07:57:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-19 07:57:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-19 07:57:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2022-11-19 07:57:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2022-11-19 07:57:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2022-11-19 07:57:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2022-11-19 07:57:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 07:57:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 07:57:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:57:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2022-11-19 07:57:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2022-11-19 07:57:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:57:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2022-11-19 07:57:21,394 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2022-11-19 07:57:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-19 07:57:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-19 07:57:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:57:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_6 [2022-11-19 07:57:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_6 [2022-11-19 07:57:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-19 07:57:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-19 07:57:21,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:57:21,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:57:21,401 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:57:21,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:57:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2022-11-19 07:57:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2022-11-19 07:57:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:57:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:57:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:57:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:57:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-19 07:57:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-19 07:57:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:57:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2022-11-19 07:57:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2022-11-19 07:57:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2022-11-19 07:57:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2022-11-19 07:57:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2022-11-19 07:57:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2022-11-19 07:57:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:57:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:57:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2022-11-19 07:57:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2022-11-19 07:57:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:57:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:57:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:57:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_6 [2022-11-19 07:57:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_6 [2022-11-19 07:57:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2022-11-19 07:57:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2022-11-19 07:57:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:57:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:57:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-19 07:57:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-19 07:57:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2022-11-19 07:57:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2022-11-19 07:57:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:57:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2022-11-19 07:57:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2022-11-19 07:57:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_6 [2022-11-19 07:57:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_6 [2022-11-19 07:57:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_8 [2022-11-19 07:57:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_8 [2022-11-19 07:57:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:57:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:57:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:57:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2022-11-19 07:57:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2022-11-19 07:57:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:57:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:57:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2022-11-19 07:57:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2022-11-19 07:57:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2022-11-19 07:57:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2022-11-19 07:57:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 07:57:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 07:57:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:57:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:57:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2022-11-19 07:57:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2022-11-19 07:57:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-19 07:57:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-19 07:57:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2022-11-19 07:57:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2022-11-19 07:57:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2022-11-19 07:57:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2022-11-19 07:57:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:57:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:57:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 07:57:21,415 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 07:57:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2022-11-19 07:57:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2022-11-19 07:57:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-11-19 07:57:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-11-19 07:57:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-19 07:57:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-19 07:57:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_46 [2022-11-19 07:57:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_46 [2022-11-19 07:57:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-19 07:57:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-19 07:57:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:57:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-19 07:57:21,419 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-19 07:57:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2022-11-19 07:57:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2022-11-19 07:57:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 07:57:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 07:57:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2022-11-19 07:57:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2022-11-19 07:57:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2022-11-19 07:57:21,421 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2022-11-19 07:57:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-19 07:57:21,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:57:21,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:57:22,344 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:57:22,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:57:24,699 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:57:31,640 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:57:34,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:57:34,895 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:57:34,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:34 BoogieIcfgContainer [2022-11-19 07:57:34,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:57:34,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:57:34,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:57:34,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:57:34,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:16" (1/3) ... [2022-11-19 07:57:34,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211afba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:34, skipping insertion in model container [2022-11-19 07:57:34,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:20" (2/3) ... [2022-11-19 07:57:34,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211afba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:34, skipping insertion in model container [2022-11-19 07:57:34,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:34" (3/3) ... [2022-11-19 07:57:34,915 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-5fdb450-1-144_2a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:57:34,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:57:34,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:57:35,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:57:35,084 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;@4402d224, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:57:35,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:57:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 1219 states, 749 states have (on average 1.3938584779706276) internal successors, (1044), 814 states have internal predecessors, (1044), 377 states have call successors, (377), 92 states have call predecessors, (377), 91 states have return successors, (368), 342 states have call predecessors, (368), 368 states have call successors, (368) [2022-11-19 07:57:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:57:35,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:35,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:57:35,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 49466584, now seen corresponding path program 1 times [2022-11-19 07:57:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:35,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457932662] [2022-11-19 07:57:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-19 07:57:36,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457932662] [2022-11-19 07:57:36,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457932662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:36,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:36,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:36,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392549966] [2022-11-19 07:57:36,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:36,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:36,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:36,711 INFO L87 Difference]: Start difference. First operand has 1219 states, 749 states have (on average 1.3938584779706276) internal successors, (1044), 814 states have internal predecessors, (1044), 377 states have call successors, (377), 92 states have call predecessors, (377), 91 states have return successors, (368), 342 states have call predecessors, (368), 368 states have call successors, (368) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:39,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:57:44,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:44,836 INFO L93 Difference]: Finished difference Result 2274 states and 3376 transitions. [2022-11-19 07:57:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2022-11-19 07:57:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:44,899 INFO L225 Difference]: With dead ends: 2274 [2022-11-19 07:57:44,900 INFO L226 Difference]: Without dead ends: 2236 [2022-11-19 07:57:44,907 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 07:57:44,911 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 1518 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:44,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 3650 Invalid, 366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-19 07:57:44,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-11-19 07:57:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2222. [2022-11-19 07:57:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1384 states have (on average 1.3916184971098267) internal successors, (1926), 1489 states have internal predecessors, (1926), 669 states have call successors, (669), 171 states have call predecessors, (669), 168 states have return successors, (689), 607 states have call predecessors, (689), 664 states have call successors, (689) [2022-11-19 07:57:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3284 transitions. [2022-11-19 07:57:45,287 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3284 transitions. Word has length 89 [2022-11-19 07:57:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:45,289 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 3284 transitions. [2022-11-19 07:57:45,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3284 transitions. [2022-11-19 07:57:45,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:57:45,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:45,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:57:45,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:57:45,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1532926857, now seen corresponding path program 1 times [2022-11-19 07:57:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:45,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272432101] [2022-11-19 07:57:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-19 07:57:46,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:46,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272432101] [2022-11-19 07:57:46,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272432101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:46,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:46,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450385464] [2022-11-19 07:57:46,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:46,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:46,103 INFO L87 Difference]: Start difference. First operand 2222 states and 3284 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:48,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:57:51,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:54,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:57:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:55,143 INFO L93 Difference]: Finished difference Result 4510 states and 6681 transitions. [2022-11-19 07:57:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-11-19 07:57:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:55,174 INFO L225 Difference]: With dead ends: 4510 [2022-11-19 07:57:55,175 INFO L226 Difference]: Without dead ends: 3297 [2022-11-19 07:57:55,185 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 07:57:55,186 INFO L413 NwaCegarLoop]: 2046 mSDtfsCounter, 1543 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:55,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 3641 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-19 07:57:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2022-11-19 07:57:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3284. [2022-11-19 07:57:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 2050 states have (on average 1.3926829268292682) internal successors, (2855), 2203 states have internal predecessors, (2855), 982 states have call successors, (982), 255 states have call predecessors, (982), 251 states have return successors, (1059), 893 states have call predecessors, (1059), 977 states have call successors, (1059) [2022-11-19 07:57:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4896 transitions. [2022-11-19 07:57:55,429 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4896 transitions. Word has length 90 [2022-11-19 07:57:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:55,431 INFO L495 AbstractCegarLoop]: Abstraction has 3284 states and 4896 transitions. [2022-11-19 07:57:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4896 transitions. [2022-11-19 07:57:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 07:57:55,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:55,438 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:57:55,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:57:55,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 275559931, now seen corresponding path program 1 times [2022-11-19 07:57:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:55,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660313842] [2022-11-19 07:57:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-19 07:57:55,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:55,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660313842] [2022-11-19 07:57:55,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660313842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:55,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:55,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:55,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512598053] [2022-11-19 07:57:55,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:55,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:55,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:55,762 INFO L87 Difference]: Start difference. First operand 3284 states and 4896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:58,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:57:59,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:01,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:04,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:04,657 INFO L93 Difference]: Finished difference Result 4941 states and 7496 transitions. [2022-11-19 07:58:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-11-19 07:58:04,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:04,706 INFO L225 Difference]: With dead ends: 4941 [2022-11-19 07:58:04,707 INFO L226 Difference]: Without dead ends: 4938 [2022-11-19 07:58:04,712 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 07:58:04,713 INFO L413 NwaCegarLoop]: 2088 mSDtfsCounter, 1456 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:04,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 3742 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 07:58:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-11-19 07:58:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4896. [2022-11-19 07:58:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 3048 states have (on average 1.3996062992125984) internal successors, (4266), 3311 states have internal predecessors, (4266), 1463 states have call successors, (1463), 398 states have call predecessors, (1463), 384 states have return successors, (1703), 1290 states have call predecessors, (1703), 1458 states have call successors, (1703) [2022-11-19 07:58:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 7432 transitions. [2022-11-19 07:58:05,090 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 7432 transitions. Word has length 91 [2022-11-19 07:58:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:05,093 INFO L495 AbstractCegarLoop]: Abstraction has 4896 states and 7432 transitions. [2022-11-19 07:58:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:58:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 7432 transitions. [2022-11-19 07:58:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:58:05,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:05,097 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:58:05,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:58:05,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:58:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash -48104244, now seen corresponding path program 1 times [2022-11-19 07:58:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:05,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376833025] [2022-11-19 07:58:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:05,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-19 07:58:05,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:05,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376833025] [2022-11-19 07:58:05,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376833025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:05,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:05,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:58:05,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223726250] [2022-11-19 07:58:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:05,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:05,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:05,431 INFO L87 Difference]: Start difference. First operand 4896 states and 7432 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:58:07,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:58:10,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:13,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:14,251 INFO L93 Difference]: Finished difference Result 5984 states and 9027 transitions. [2022-11-19 07:58:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-11-19 07:58:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:14,302 INFO L225 Difference]: With dead ends: 5984 [2022-11-19 07:58:14,302 INFO L226 Difference]: Without dead ends: 5981 [2022-11-19 07:58:14,308 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 07:58:14,310 INFO L413 NwaCegarLoop]: 2042 mSDtfsCounter, 1579 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:14,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 3606 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 07:58:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-11-19 07:58:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 5973. [2022-11-19 07:58:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 3726 states have (on average 1.3990874932903918) internal successors, (5213), 4036 states have internal predecessors, (5213), 1781 states have call successors, (1781), 479 states have call predecessors, (1781), 465 states have return successors, (2022), 1583 states have call predecessors, (2022), 1776 states have call successors, (2022) [2022-11-19 07:58:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 9016 transitions. [2022-11-19 07:58:14,758 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 9016 transitions. Word has length 92 [2022-11-19 07:58:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:14,759 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 9016 transitions. [2022-11-19 07:58:14,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:58:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 9016 transitions. [2022-11-19 07:58:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:58:14,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:14,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:58:14,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:58:14,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:58:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1491754210, now seen corresponding path program 1 times [2022-11-19 07:58:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:14,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673108826] [2022-11-19 07:58:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:14,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-19 07:58:15,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:15,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673108826] [2022-11-19 07:58:15,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673108826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:15,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:15,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:58:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602418960] [2022-11-19 07:58:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:15,026 INFO L87 Difference]: Start difference. First operand 5973 states and 9016 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:58:17,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:58:20,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:22,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:58:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:23,994 INFO L93 Difference]: Finished difference Result 5985 states and 9027 transitions. [2022-11-19 07:58:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:58:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2022-11-19 07:58:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:24,057 INFO L225 Difference]: With dead ends: 5985 [2022-11-19 07:58:24,058 INFO L226 Difference]: Without dead ends: 5975 [2022-11-19 07:58:24,065 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 07:58:24,067 INFO L413 NwaCegarLoop]: 2043 mSDtfsCounter, 1576 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:24,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3610 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 07:58:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2022-11-19 07:58:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5967. [2022-11-19 07:58:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5967 states, 3720 states have (on average 1.3991935483870968) internal successors, (5205), 4031 states have internal predecessors, (5205), 1781 states have call successors, (1781), 479 states have call predecessors, (1781), 465 states have return successors, (2021), 1582 states have call predecessors, (2021), 1776 states have call successors, (2021) [2022-11-19 07:58:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 9007 transitions. [2022-11-19 07:58:24,572 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 9007 transitions. Word has length 93 [2022-11-19 07:58:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:24,574 INFO L495 AbstractCegarLoop]: Abstraction has 5967 states and 9007 transitions. [2022-11-19 07:58:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:58:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 9007 transitions. [2022-11-19 07:58:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 07:58:24,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:24,582 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:58:24,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:58:24,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:58:24,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1955295145, now seen corresponding path program 1 times [2022-11-19 07:58:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:24,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716942477] [2022-11-19 07:58:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 07:58:25,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716942477] [2022-11-19 07:58:25,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716942477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:25,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:25,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:58:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468314146] [2022-11-19 07:58:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:58:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:58:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:58:25,348 INFO L87 Difference]: Start difference. First operand 5967 states and 9007 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:58:34,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:58:50,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:00,539 INFO L93 Difference]: Finished difference Result 15604 states and 23690 transitions. [2022-11-19 07:59:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:59:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2022-11-19 07:59:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:00,614 INFO L225 Difference]: With dead ends: 15604 [2022-11-19 07:59:00,614 INFO L226 Difference]: Without dead ends: 9654 [2022-11-19 07:59:00,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:59:00,659 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 2518 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 7569 mSolverCounterSat, 1197 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2832 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 8768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 7569 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2832 Valid, 2159 Invalid, 8768 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1197 Valid, 7569 Invalid, 2 Unknown, 0 Unchecked, 33.9s Time] [2022-11-19 07:59:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2022-11-19 07:59:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 9580. [2022-11-19 07:59:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 5955 states have (on average 1.395633921074727) internal successors, (8311), 6461 states have internal predecessors, (8311), 2836 states have call successors, (2836), 799 states have call predecessors, (2836), 788 states have return successors, (3281), 2538 states have call predecessors, (3281), 2831 states have call successors, (3281) [2022-11-19 07:59:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 14428 transitions. [2022-11-19 07:59:01,574 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 14428 transitions. Word has length 136 [2022-11-19 07:59:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:01,575 INFO L495 AbstractCegarLoop]: Abstraction has 9580 states and 14428 transitions. [2022-11-19 07:59:01,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:59:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 14428 transitions. [2022-11-19 07:59:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 07:59:01,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:01,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:59:01,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:59:01,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash -503614287, now seen corresponding path program 1 times [2022-11-19 07:59:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:01,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119981477] [2022-11-19 07:59:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 07:59:02,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119981477] [2022-11-19 07:59:02,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119981477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:02,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:02,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:59:02,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466965434] [2022-11-19 07:59:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:59:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:59:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:59:02,260 INFO L87 Difference]: Start difference. First operand 9580 states and 14428 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:59:10,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:59:12,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:26,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:59:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:35,677 INFO L93 Difference]: Finished difference Result 27157 states and 41681 transitions. [2022-11-19 07:59:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:59:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2022-11-19 07:59:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:35,790 INFO L225 Difference]: With dead ends: 27157 [2022-11-19 07:59:35,791 INFO L226 Difference]: Without dead ends: 17594 [2022-11-19 07:59:35,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:59:35,866 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 2518 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 7568 mSolverCounterSat, 1214 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2834 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 8784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1214 IncrementalHoareTripleChecker+Valid, 7568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:35,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2834 Valid, 2143 Invalid, 8784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1214 Valid, 7568 Invalid, 2 Unknown, 0 Unchecked, 31.9s Time] [2022-11-19 07:59:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17594 states. [2022-11-19 07:59:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17594 to 17323. [2022-11-19 07:59:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17323 states, 10715 states have (on average 1.3892673821745216) internal successors, (14886), 11658 states have internal predecessors, (14886), 5066 states have call successors, (5066), 1519 states have call predecessors, (5066), 1541 states have return successors, (6336), 4564 states have call predecessors, (6336), 5061 states have call successors, (6336) [2022-11-19 07:59:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17323 states to 17323 states and 26288 transitions. [2022-11-19 07:59:37,704 INFO L78 Accepts]: Start accepts. Automaton has 17323 states and 26288 transitions. Word has length 136 [2022-11-19 07:59:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:37,705 INFO L495 AbstractCegarLoop]: Abstraction has 17323 states and 26288 transitions. [2022-11-19 07:59:37,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:59:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 17323 states and 26288 transitions. [2022-11-19 07:59:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-19 07:59:37,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:37,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 07:59:37,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:59:37,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1401186895, now seen corresponding path program 1 times [2022-11-19 07:59:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:37,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28227395] [2022-11-19 07:59:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 07:59:38,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28227395] [2022-11-19 07:59:38,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28227395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:38,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:38,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:59:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190580428] [2022-11-19 07:59:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:59:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:59:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:59:38,347 INFO L87 Difference]: Start difference. First operand 17323 states and 26288 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:59:43,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:00:02,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:12,690 INFO L93 Difference]: Finished difference Result 52295 states and 82112 transitions. [2022-11-19 08:00:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 08:00:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2022-11-19 08:00:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:12,917 INFO L225 Difference]: With dead ends: 52295 [2022-11-19 08:00:12,917 INFO L226 Difference]: Without dead ends: 34989 [2022-11-19 08:00:13,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:00:13,009 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 2520 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 7615 mSolverCounterSat, 1204 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 8821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 7615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:13,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 2151 Invalid, 8821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1204 Valid, 7615 Invalid, 2 Unknown, 0 Unchecked, 31.6s Time] [2022-11-19 08:00:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34989 states. [2022-11-19 08:00:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34989 to 34433. [2022-11-19 08:00:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34433 states, 21135 states have (on average 1.3809321031464397) internal successors, (29186), 23128 states have internal predecessors, (29186), 9938 states have call successors, (9938), 3214 states have call predecessors, (9938), 3359 states have return successors, (13781), 8956 states have call predecessors, (13781), 9933 states have call successors, (13781) [2022-11-19 08:00:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34433 states to 34433 states and 52905 transitions. [2022-11-19 08:00:16,852 INFO L78 Accepts]: Start accepts. Automaton has 34433 states and 52905 transitions. Word has length 136 [2022-11-19 08:00:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 34433 states and 52905 transitions. [2022-11-19 08:00:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 08:00:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 34433 states and 52905 transitions. [2022-11-19 08:00:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-19 08:00:16,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:16,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 08:00:16,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:00:16,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1696548736, now seen corresponding path program 1 times [2022-11-19 08:00:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:16,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558811414] [2022-11-19 08:00:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:16,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-19 08:00:17,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:17,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558811414] [2022-11-19 08:00:17,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558811414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:17,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:17,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:00:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963765339] [2022-11-19 08:00:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:17,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:00:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:00:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:00:17,339 INFO L87 Difference]: Start difference. First operand 34433 states and 52905 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:00:22,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:00:25,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:27,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:39,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:00:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:50,463 INFO L93 Difference]: Finished difference Result 68761 states and 107185 transitions. [2022-11-19 08:00:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 08:00:50,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 144 [2022-11-19 08:00:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:50,640 INFO L225 Difference]: With dead ends: 68761 [2022-11-19 08:00:50,640 INFO L226 Difference]: Without dead ends: 33335 [2022-11-19 08:00:50,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:00:50,797 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 2499 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 6820 mSolverCounterSat, 1171 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 7993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1171 IncrementalHoareTripleChecker+Valid, 6820 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:50,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2816 Valid, 1710 Invalid, 7993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1171 Valid, 6820 Invalid, 2 Unknown, 0 Unchecked, 30.0s Time] [2022-11-19 08:00:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33335 states. [2022-11-19 08:00:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33335 to 33307. [2022-11-19 08:00:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33307 states, 20570 states have (on average 1.3692270296548372) internal successors, (28165), 22203 states have internal predecessors, (28165), 9488 states have call successors, (9488), 3177 states have call predecessors, (9488), 3248 states have return successors, (11300), 8589 states have call predecessors, (11300), 9483 states have call successors, (11300) [2022-11-19 08:00:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33307 states to 33307 states and 48953 transitions. [2022-11-19 08:00:54,005 INFO L78 Accepts]: Start accepts. Automaton has 33307 states and 48953 transitions. Word has length 144 [2022-11-19 08:00:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:54,008 INFO L495 AbstractCegarLoop]: Abstraction has 33307 states and 48953 transitions. [2022-11-19 08:00:54,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 08:00:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 33307 states and 48953 transitions. [2022-11-19 08:00:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 08:00:54,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:54,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-19 08:00:54,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:00:54,022 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash -249455305, now seen corresponding path program 1 times [2022-11-19 08:00:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:00:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851637423] [2022-11-19 08:00:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:00:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:00:54,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:00:54,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851637423] [2022-11-19 08:00:54,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851637423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:54,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:54,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586475397] [2022-11-19 08:00:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:00:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:54,631 INFO L87 Difference]: Start difference. First operand 33307 states and 48953 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:00:58,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:01:05,574 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 08:01:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:08,503 INFO L93 Difference]: Finished difference Result 65907 states and 96755 transitions. [2022-11-19 08:01:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:01:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2022-11-19 08:01:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:08,667 INFO L225 Difference]: With dead ends: 65907 [2022-11-19 08:01:08,667 INFO L226 Difference]: Without dead ends: 33292 [2022-11-19 08:01:08,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:08,773 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 1711 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 172 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4878 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:08,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 4878 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1231 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-19 08:01:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33292 states. [2022-11-19 08:01:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33292 to 33258. [2022-11-19 08:01:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33258 states, 20546 states have (on average 1.368441545799669) internal successors, (28116), 22178 states have internal predecessors, (28116), 9463 states have call successors, (9463), 3177 states have call predecessors, (9463), 3248 states have return successors, (11249), 8565 states have call predecessors, (11249), 9458 states have call successors, (11249) [2022-11-19 08:01:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33258 states to 33258 states and 48828 transitions. [2022-11-19 08:01:11,763 INFO L78 Accepts]: Start accepts. Automaton has 33258 states and 48828 transitions. Word has length 126 [2022-11-19 08:01:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:11,764 INFO L495 AbstractCegarLoop]: Abstraction has 33258 states and 48828 transitions. [2022-11-19 08:01:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:01:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 33258 states and 48828 transitions. [2022-11-19 08:01:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 08:01:11,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:11,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 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] [2022-11-19 08:01:11,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:01:11,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1546183824, now seen corresponding path program 1 times [2022-11-19 08:01:11,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:11,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221380597] [2022-11-19 08:01:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:01:13,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221380597] [2022-11-19 08:01:13,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221380597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:01:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683494092] [2022-11-19 08:01:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:13,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:13,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:13,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:01:13,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:01:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:14,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:01:14,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:14,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683494092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:14,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:01:14,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-19 08:01:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773738281] [2022-11-19 08:01:14,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:14,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:14,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:14,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:14,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:01:14,811 INFO L87 Difference]: Start difference. First operand 33258 states and 48828 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:01:17,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:01:19,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:22,380 WARN L539 Checker$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 08:01:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:24,998 INFO L93 Difference]: Finished difference Result 66035 states and 96914 transitions. [2022-11-19 08:01:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:24,998 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2022-11-19 08:01:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:25,174 INFO L225 Difference]: With dead ends: 66035 [2022-11-19 08:01:25,174 INFO L226 Difference]: Without dead ends: 33217 [2022-11-19 08:01:25,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:01:25,293 INFO L413 NwaCegarLoop]: 2034 mSDtfsCounter, 1578 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:25,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3599 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 08:01:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33217 states. [2022-11-19 08:01:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33217 to 33209. [2022-11-19 08:01:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33209 states, 20522 states have (on average 1.3676542247344314) internal successors, (28067), 22153 states have internal predecessors, (28067), 9438 states have call successors, (9438), 3177 states have call predecessors, (9438), 3248 states have return successors, (11198), 8541 states have call predecessors, (11198), 9433 states have call successors, (11198) [2022-11-19 08:01:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33209 states to 33209 states and 48703 transitions. [2022-11-19 08:01:28,162 INFO L78 Accepts]: Start accepts. Automaton has 33209 states and 48703 transitions. Word has length 130 [2022-11-19 08:01:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:28,163 INFO L495 AbstractCegarLoop]: Abstraction has 33209 states and 48703 transitions. [2022-11-19 08:01:28,163 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:01:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 33209 states and 48703 transitions. [2022-11-19 08:01:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-19 08:01:28,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:28,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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] [2022-11-19 08:01:28,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:28,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:28,387 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash -502329659, now seen corresponding path program 1 times [2022-11-19 08:01:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:28,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291696951] [2022-11-19 08:01:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:28,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-19 08:01:29,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:29,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291696951] [2022-11-19 08:01:29,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291696951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:01:29,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919246480] [2022-11-19 08:01:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:29,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:29,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:29,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:01:29,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:01:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:31,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 08:01:31,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 08:01:31,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:31,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919246480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:31,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:01:31,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-19 08:01:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607928082] [2022-11-19 08:01:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:31,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:01:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:01:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:01:31,447 INFO L87 Difference]: Start difference. First operand 33209 states and 48703 transitions. Second operand has 6 states, 4 states have (on average 15.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 08:01:34,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:01:37,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:38,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:44,134 WARN L539 Checker$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 08:01:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:46,292 INFO L93 Difference]: Finished difference Result 66464 states and 97557 transitions. [2022-11-19 08:01:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:01:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2022-11-19 08:01:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:46,444 INFO L225 Difference]: With dead ends: 66464 [2022-11-19 08:01:46,445 INFO L226 Difference]: Without dead ends: 33263 [2022-11-19 08:01:46,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:01:46,642 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 3 mSDsluCounter, 6301 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:46,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7880 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 916 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-11-19 08:01:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33263 states. [2022-11-19 08:01:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33263 to 33211. [2022-11-19 08:01:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33211 states, 20523 states have (on average 1.3676850363007358) internal successors, (28069), 22155 states have internal predecessors, (28069), 9438 states have call successors, (9438), 3177 states have call predecessors, (9438), 3249 states have return successors, (11202), 8541 states have call predecessors, (11202), 9433 states have call successors, (11202) [2022-11-19 08:01:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33211 states to 33211 states and 48709 transitions. [2022-11-19 08:01:49,488 INFO L78 Accepts]: Start accepts. Automaton has 33211 states and 48709 transitions. Word has length 128 [2022-11-19 08:01:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:49,489 INFO L495 AbstractCegarLoop]: Abstraction has 33211 states and 48709 transitions. [2022-11-19 08:01:49,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 08:01:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 33211 states and 48709 transitions. [2022-11-19 08:01:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 08:01:49,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:49,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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] [2022-11-19 08:01:49,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:49,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:49,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1119363833, now seen corresponding path program 1 times [2022-11-19 08:01:49,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:49,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209721469] [2022-11-19 08:01:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-19 08:01:51,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:51,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209721469] [2022-11-19 08:01:51,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209721469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:01:51,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237849900] [2022-11-19 08:01:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:51,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:51,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:51,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:01:51,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:01:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:52,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-19 08:01:53,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:53,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237849900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:53,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:01:53,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-19 08:01:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906192496] [2022-11-19 08:01:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:01:53,025 INFO L87 Difference]: Start difference. First operand 33211 states and 48709 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:01:55,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:01:58,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:01,894 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 08:02:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:04,296 INFO L93 Difference]: Finished difference Result 65942 states and 96681 transitions. [2022-11-19 08:02:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:04,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2022-11-19 08:02:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:04,423 INFO L225 Difference]: With dead ends: 65942 [2022-11-19 08:02:04,424 INFO L226 Difference]: Without dead ends: 33170 [2022-11-19 08:02:04,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:04,503 INFO L413 NwaCegarLoop]: 2033 mSDtfsCounter, 1576 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:04,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3598 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 08:02:04,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33170 states. [2022-11-19 08:02:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33170 to 33162. [2022-11-19 08:02:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33162 states, 20499 states have (on average 1.3668959461437142) internal successors, (28020), 22130 states have internal predecessors, (28020), 9413 states have call successors, (9413), 3177 states have call predecessors, (9413), 3249 states have return successors, (11151), 8517 states have call predecessors, (11151), 9408 states have call successors, (11151) [2022-11-19 08:02:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33162 states to 33162 states and 48584 transitions. [2022-11-19 08:02:07,450 INFO L78 Accepts]: Start accepts. Automaton has 33162 states and 48584 transitions. Word has length 130 [2022-11-19 08:02:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:07,451 INFO L495 AbstractCegarLoop]: Abstraction has 33162 states and 48584 transitions. [2022-11-19 08:02:07,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:02:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 33162 states and 48584 transitions. [2022-11-19 08:02:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 08:02:07,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:07,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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] [2022-11-19 08:02:07,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:02:07,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 08:02:07,675 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1523009137, now seen corresponding path program 1 times [2022-11-19 08:02:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:07,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133326362] [2022-11-19 08:02:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-19 08:02:09,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133326362] [2022-11-19 08:02:09,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133326362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:02:09,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681721571] [2022-11-19 08:02:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:09,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:02:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:02:09,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:02:09,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12101209-e3c4-46bd-a447-b9a03bee3259/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:02:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:10,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:02:10,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:02:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-19 08:02:10,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:02:10,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681721571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:10,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:02:10,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-19 08:02:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946936946] [2022-11-19 08:02:10,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:10,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:10,757 INFO L87 Difference]: Start difference. First operand 33162 states and 48584 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 08:02:13,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 08:02:15,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:19,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:21,258 INFO L93 Difference]: Finished difference Result 65845 states and 96436 transitions. [2022-11-19 08:02:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-11-19 08:02:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:21,420 INFO L225 Difference]: With dead ends: 65845 [2022-11-19 08:02:21,420 INFO L226 Difference]: Without dead ends: 33121 [2022-11-19 08:02:21,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:02:21,514 INFO L413 NwaCegarLoop]: 2032 mSDtfsCounter, 1569 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:21,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 3597 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 08:02:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33121 states.