./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:55:53,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:55:53,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:55:53,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:55:53,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:55:53,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:55:53,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:55:53,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:55:53,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:55:53,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:55:53,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:55:53,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:55:53,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:55:53,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:55:53,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:55:53,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:55:53,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:55:53,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:55:53,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:55:53,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:55:53,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:55:53,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:55:53,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:55:53,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:55:53,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:55:53,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:55:53,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:55:53,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:55:53,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:55:53,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:55:53,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:55:53,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:55:53,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:55:53,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:55:53,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:55:53,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:55:53,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:55:53,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:55:53,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:55:53,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:55:53,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:55:53,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:55:54,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:55:54,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:55:54,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:55:54,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:55:54,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:55:54,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:55:54,018 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:55:54,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:55:54,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:55:54,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:55:54,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:55:54,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:55:54,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:55:54,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:55:54,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:55:54,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:55:54,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:55:54,021 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:55:54,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:55:54,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:55:54,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:55:54,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:55:54,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:55:54,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:55:54,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:55:54,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:55:54,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:55:54,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:55:54,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:55:54,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:55:54,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:55:54,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:55:54,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:55:54,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:55:54,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:55:54,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:55:54,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:55:54,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:55:54,028 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd [2021-11-25 19:55:54,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:55:54,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:55:54,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:55:54,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:55:54,381 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:55:54,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2021-11-25 19:55:54,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/data/16aee5630/b2d6500b820a4c748e51cf69dd9e3bad/FLAG2dd245098 [2021-11-25 19:55:55,938 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:55:55,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2021-11-25 19:55:56,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/data/16aee5630/b2d6500b820a4c748e51cf69dd9e3bad/FLAG2dd245098 [2021-11-25 19:55:56,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/data/16aee5630/b2d6500b820a4c748e51cf69dd9e3bad [2021-11-25 19:55:56,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:55:56,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:55:56,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:55:56,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:55:56,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:55:56,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:55:56" (1/1) ... [2021-11-25 19:55:56,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b87ab8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:55:56, skipping insertion in model container [2021-11-25 19:55:56,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:55:56" (1/1) ... [2021-11-25 19:55:56,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:55:56,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:56:06,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i[723056,723069] [2021-11-25 19:56:06,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:56:06,796 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:56:07,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i[723056,723069] [2021-11-25 19:56:07,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:56:08,372 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:56:08,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08 WrapperNode [2021-11-25 19:56:08,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:56:08,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:56:08,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:56:08,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:56:08,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:08,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,032 INFO L137 Inliner]: procedures = 905, calls = 9946, calls flagged for inlining = 323, calls inlined = 188, statements flattened = 12629 [2021-11-25 19:56:09,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:56:09,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:56:09,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:56:09,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:56:09,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:56:09,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:56:09,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:56:09,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:56:09,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (1/1) ... [2021-11-25 19:56:09,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:56:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:09,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:56:09,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:56:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM_page [2021-11-25 19:56:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM_page [2021-11-25 19:56:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 19:56:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_device [2021-11-25 19:56:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_device [2021-11-25 19:56:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_status_to_errno [2021-11-25 19:56:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_status_to_errno [2021-11-25 19:56:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icms [2021-11-25 19:56:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icms [2021-11-25 19:56:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:56:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:56:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:56:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:56:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:56:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:56:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_key [2021-11-25 19:56:09,764 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_key [2021-11-25 19:56:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure key_to_hw_index [2021-11-25 19:56:09,764 INFO L138 BoogieDeclarations]: Found implementation of procedure key_to_hw_index [2021-11-25 19:56:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:56:09,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:56:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-11-25 19:56:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-11-25 19:56:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:56:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:56:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_icm [2021-11-25 19:56:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_icm [2021-11-25 19:56:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:56:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:56:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uarc_virt [2021-11-25 19:56:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uarc_virt [2021-11-25 19:56:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2021-11-25 19:56:09,766 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2021-11-25 19:56:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:56:09,767 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:56:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2021-11-25 19:56:09,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2021-11-25 19:56:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:56:09,768 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:56:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_zero [2021-11-25 19:56:09,768 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_zero [2021-11-25 19:56:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_cleanup [2021-11-25 19:56:09,769 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_cleanup [2021-11-25 19:56:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_device [2021-11-25 19:56:09,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_device [2021-11-25 19:56:09,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:56:09,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:56:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_port [2021-11-25 19:56:09,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_port [2021-11-25 19:56:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_region [2021-11-25 19:56:09,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_region [2021-11-25 19:56:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:56:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:56:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-25 19:56:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-25 19:56:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_pcie_cap [2021-11-25 19:56:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_pcie_cap [2021-11-25 19:56:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CLOSE_IB [2021-11-25 19:56:09,773 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CLOSE_IB [2021-11-25 19:56:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure clear_page [2021-11-25 19:56:09,774 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_page [2021-11-25 19:56:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_alloc [2021-11-25 19:56:09,774 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_alloc [2021-11-25 19:56:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:56:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_init_one [2021-11-25 19:56:09,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_init_one [2021-11-25 19:56:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_create_eq [2021-11-25 19:56:09,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_create_eq [2021-11-25 19:56:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt [2021-11-25 19:56:09,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt [2021-11-25 19:56:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm_table [2021-11-25 19:56:09,776 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm_table [2021-11-25 19:56:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_catas_cleanup [2021-11-25 19:56:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_catas_cleanup [2021-11-25 19:56:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure hw_index_to_key [2021-11-25 19:56:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_index_to_key [2021-11-25 19:56:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 19:56:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 19:56:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64_raw [2021-11-25 19:56:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64_raw [2021-11-25 19:56:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:56:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:56:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_use_polling [2021-11-25 19:56:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_use_polling [2021-11-25 19:56:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-25 19:56:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-25 19:56:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm_table [2021-11-25 19:56:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm_table [2021-11-25 19:56:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:56:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt_range [2021-11-25 19:56:09,781 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt_range [2021-11-25 19:56:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-25 19:56:09,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-25 19:56:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:56:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:56:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 19:56:09,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 19:56:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:56:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 19:56:09,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 19:56:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_free [2021-11-25 19:56:09,783 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_free [2021-11-25 19:56:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_cleanup [2021-11-25 19:56:09,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_cleanup [2021-11-25 19:56:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_eq_req_not [2021-11-25 19:56:09,784 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_eq_req_not [2021-11-25 19:56:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:56:09,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:56:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-11-25 19:56:09,785 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-11-25 19:56:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:56:09,786 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:56:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_cleanup [2021-11-25 19:56:09,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_cleanup [2021-11-25 19:56:09,789 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_eq_table [2021-11-25 19:56:09,789 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_eq_table [2021-11-25 19:56:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:56:09,791 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:56:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:56:09,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:56:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 19:56:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 19:56:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:56:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:56:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:56:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 19:56:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 19:56:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_av_table [2021-11-25 19:56:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_av_table [2021-11-25 19:56:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm [2021-11-25 19:56:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm [2021-11-25 19:56:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_alloc_mtt [2021-11-25 19:56:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_alloc_mtt [2021-11-25 19:56:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-25 19:56:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-25 19:56:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:56:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:56:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 19:56:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 19:56:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_is_memfree [2021-11-25 19:56:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_is_memfree [2021-11-25 19:56:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_eq_req_not [2021-11-25 19:56:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_eq_req_not [2021-11-25 19:56:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM [2021-11-25 19:56:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM [2021-11-25 19:56:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:56:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:56:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure set_eqe_hw [2021-11-25 19:56:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure set_eqe_hw [2021-11-25 19:56:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-25 19:56:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-25 19:56:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 19:56:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 19:56:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:56:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:56:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:56:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_update_rate [2021-11-25 19:56:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_update_rate [2021-11-25 19:56:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:56:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM [2021-11-25 19:56:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM [2021-11-25 19:56:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_init [2021-11-25 19:56:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_init [2021-11-25 19:56:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:56:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:56:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 19:56:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 19:56:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_uar_table [2021-11-25 19:56:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_uar_table [2021-11-25 19:56:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:56:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:56:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:56:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:56:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_addr [2021-11-25 19:56:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_addr [2021-11-25 19:56:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2021-11-25 19:56:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2021-11-25 19:56:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 19:56:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 19:56:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 19:56:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 19:56:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 19:56:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 19:56:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mtt [2021-11-25 19:56:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mtt [2021-11-25 19:56:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure go_bit [2021-11-25 19:56:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure go_bit [2021-11-25 19:56:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:56:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free [2021-11-25 19:56:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free [2021-11-25 19:56:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2021-11-25 19:56:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2021-11-25 19:56:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 19:56:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 19:56:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:56:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:56:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mthca_device_mutex [2021-11-25 19:56:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mthca_device_mutex [2021-11-25 19:56:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SW2HW_MPT [2021-11-25 19:56:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SW2HW_MPT [2021-11-25 19:56:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure pcie_capability_write_word [2021-11-25 19:56:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure pcie_capability_write_word [2021-11-25 19:56:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_irqs [2021-11-25 19:56:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_irqs [2021-11-25 19:56:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mr_table [2021-11-25 19:56:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mr_table [2021-11-25 19:56:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure __be64_to_cpup [2021-11-25 19:56:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __be64_to_cpup [2021-11-25 19:56:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_GET [2021-11-25 19:56:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-25 19:56:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-25 19:56:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-25 19:56:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-25 19:56:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_notrans [2021-11-25 19:56:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_notrans [2021-11-25 19:56:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-11-25 19:56:09,813 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-11-25 19:56:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 19:56:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 19:56:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_put [2021-11-25 19:56:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_put [2021-11-25 19:56:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc [2021-11-25 19:56:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc [2021-11-25 19:56:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64 [2021-11-25 19:56:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64 [2021-11-25 19:56:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-25 19:56:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-25 19:56:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_imm [2021-11-25 19:56:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_imm [2021-11-25 19:56:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mcg_table [2021-11-25 19:56:09,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mcg_table [2021-11-25 19:56:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_qp_table [2021-11-25 19:56:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_qp_table [2021-11-25 19:56:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:56:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:56:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_device [2021-11-25 19:56:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_device [2021-11-25 19:56:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_mad_agent [2021-11-25 19:56:09,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_mad_agent [2021-11-25 19:56:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 19:56:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 19:56:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 19:56:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 19:56:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_INIT_HCA [2021-11-25 19:56:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_INIT_HCA [2021-11-25 19:56:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_hw_index_to_key [2021-11-25 19:56:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_hw_index_to_key [2021-11-25 19:56:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:56:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:56:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:56:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:56:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-25 19:56:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-25 19:56:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_cq_table [2021-11-25 19:56:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_cq_table [2021-11-25 19:56:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_cleanup [2021-11-25 19:56:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_cleanup [2021-11-25 19:56:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:56:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:56:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_close_hca [2021-11-25 19:56:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_close_hca [2021-11-25 19:56:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_EQ [2021-11-25 19:56:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_EQ [2021-11-25 19:56:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure down [2021-11-25 19:56:09,825 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2021-11-25 19:56:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-25 19:56:09,826 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-25 19:56:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAD_IFC [2021-11-25 19:56:09,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAD_IFC [2021-11-25 19:56:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_cmd [2021-11-25 19:56:09,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_cmd [2021-11-25 19:56:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-11-25 19:56:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-11-25 19:56:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:56:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2021-11-25 19:56:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2021-11-25 19:56:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_eq [2021-11-25 19:56:09,827 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_eq [2021-11-25 19:56:09,827 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_alloc [2021-11-25 19:56:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_alloc [2021-11-25 19:56:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mailbox [2021-11-25 19:56:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mailbox [2021-11-25 19:56:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 19:56:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 19:56:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 19:56:09,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 19:56:09,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:56:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_DISABLE_LAM [2021-11-25 19:56:09,829 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_DISABLE_LAM [2021-11-25 19:56:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:56:09,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:56:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:56:09,829 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2021-11-25 19:56:09,829 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2021-11-25 19:56:09,830 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_alloc [2021-11-25 19:56:09,830 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_alloc [2021-11-25 19:56:09,830 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_empty [2021-11-25 19:56:09,830 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_empty [2021-11-25 19:56:09,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mthca_device_mutex [2021-11-25 19:56:09,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mthca_device_mutex [2021-11-25 19:56:09,830 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_setup_hca [2021-11-25 19:56:09,831 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_setup_hca [2021-11-25 19:56:09,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:56:09,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:56:09,831 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc [2021-11-25 19:56:09,831 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc [2021-11-25 19:56:09,831 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CONF_SPECIAL_QP [2021-11-25 19:56:09,831 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CONF_SPECIAL_QP [2021-11-25 19:56:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_reg [2021-11-25 19:56:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_reg [2021-11-25 19:56:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_check_profile_val [2021-11-25 19:56:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_check_profile_val [2021-11-25 19:56:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_sg [2021-11-25 19:56:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_sg [2021-11-25 19:56:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_FA [2021-11-25 19:56:09,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_FA [2021-11-25 19:56:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_free [2021-11-25 19:56:09,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_free [2021-11-25 19:56:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-25 19:56:09,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-25 19:56:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt_size [2021-11-25 19:56:09,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt_size [2021-11-25 19:56:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure dma_get_cache_alignment [2021-11-25 19:56:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_get_cache_alignment [2021-11-25 19:56:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mr [2021-11-25 19:56:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mr [2021-11-25 19:56:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mailbox [2021-11-25 19:56:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mailbox [2021-11-25 19:56:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 19:56:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 19:56:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:56:09,835 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:56:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_dev_lim [2021-11-25 19:56:09,835 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_dev_lim [2021-11-25 19:56:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2021-11-25 19:56:09,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2021-11-25 19:56:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_hw_index_to_key [2021-11-25 19:56:09,836 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_hw_index_to_key [2021-11-25 19:56:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_QUERY_FW [2021-11-25 19:56:09,836 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_QUERY_FW [2021-11-25 19:56:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure writeq [2021-11-25 19:56:09,836 INFO L138 BoogieDeclarations]: Found implementation of procedure writeq [2021-11-25 19:56:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 19:56:09,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 19:56:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SYS_DIS [2021-11-25 19:56:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SYS_DIS [2021-11-25 19:56:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_init [2021-11-25 19:56:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_init [2021-11-25 19:56:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_box [2021-11-25 19:56:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_box [2021-11-25 19:56:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:56:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-25 19:56:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-25 19:56:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 19:56:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 19:56:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_make_profile [2021-11-25 19:56:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_make_profile [2021-11-25 19:56:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure fls64 [2021-11-25 19:56:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fls64 [2021-11-25 19:56:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 19:56:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 19:56:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unregister_device [2021-11-25 19:56:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unregister_device [2021-11-25 19:56:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_key_to_hw_index [2021-11-25 19:56:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_key_to_hw_index [2021-11-25 19:56:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-11-25 19:56:09,840 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-11-25 19:56:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 19:56:09,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 19:56:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-25 19:56:09,840 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-25 19:56:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-25 19:56:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-25 19:56:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-25 19:56:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-25 19:56:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:56:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_find [2021-11-25 19:56:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_find [2021-11-25 19:56:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm [2021-11-25 19:56:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm [2021-11-25 19:56:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_size [2021-11-25 19:56:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_size [2021-11-25 19:56:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 19:56:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 19:56:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-11-25 19:56:09,842 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-11-25 19:56:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_srq_table [2021-11-25 19:56:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_srq_table [2021-11-25 19:56:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_poll [2021-11-25 19:56:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_poll [2021-11-25 19:56:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM_AUX [2021-11-25 19:56:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM_AUX [2021-11-25 19:56:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-11-25 19:56:09,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-11-25 19:56:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_wait [2021-11-25 19:56:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_wait [2021-11-25 19:56:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_phys [2021-11-25 19:56:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_phys [2021-11-25 19:56:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_sg [2021-11-25 19:56:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_sg [2021-11-25 19:56:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:56:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:56:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure get_eqe [2021-11-25 19:56:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eqe [2021-11-25 19:56:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure async_mask [2021-11-25 19:56:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure async_mask [2021-11-25 19:56:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_init [2021-11-25 19:56:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_init [2021-11-25 19:56:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_free [2021-11-25 19:56:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_free [2021-11-25 19:56:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd [2021-11-25 19:56:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd [2021-11-25 19:56:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-25 19:56:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-25 19:56:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_get [2021-11-25 19:56:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_get [2021-11-25 19:56:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_remove_one [2021-11-25 19:56:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_remove_one [2021-11-25 19:56:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 19:56:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 19:56:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_pd_table [2021-11-25 19:56:09,847 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_pd_table [2021-11-25 19:56:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure init_query_mad [2021-11-25 19:56:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure init_query_mad [2021-11-25 19:56:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-25 19:56:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-25 19:56:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2021-11-25 19:56:09,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2021-11-25 19:56:09,848 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_post [2021-11-25 19:56:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_post [2021-11-25 19:56:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 19:56:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 19:56:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:56:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:56:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:56:09,849 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_regs [2021-11-25 19:56:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_regs [2021-11-25 19:56:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_PUT [2021-11-25 19:56:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt [2021-11-25 19:56:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt [2021-11-25 19:56:11,631 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:56:11,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:56:56,457 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:57:00,931 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:57:00,932 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:57:00,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:57:00 BoogieIcfgContainer [2021-11-25 19:57:00,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:57:00,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:57:00,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:57:00,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:57:00,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:55:56" (1/3) ... [2021-11-25 19:57:00,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f268eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:57:00, skipping insertion in model container [2021-11-25 19:57:00,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:56:08" (2/3) ... [2021-11-25 19:57:00,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f268eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:57:00, skipping insertion in model container [2021-11-25 19:57:00,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:57:00" (3/3) ... [2021-11-25 19:57:00,952 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2021-11-25 19:57:00,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:57:00,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:57:01,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:57:01,043 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:57:01,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:57:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 4013 states, 2588 states have (on average 1.3721020092735703) internal successors, (3551), 2657 states have internal predecessors, (3551), 1213 states have call successors, (1213), 210 states have call predecessors, (1213), 210 states have return successors, (1213), 1213 states have call predecessors, (1213), 1213 states have call successors, (1213) [2021-11-25 19:57:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:57:01,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:01,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:01,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:01,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1311138355, now seen corresponding path program 1 times [2021-11-25 19:57:01,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:01,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286556046] [2021-11-25 19:57:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:01,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:01,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:01,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286556046] [2021-11-25 19:57:01,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286556046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:01,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:01,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:01,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269064757] [2021-11-25 19:57:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:01,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:01,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:01,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:01,970 INFO L87 Difference]: Start difference. First operand has 4013 states, 2588 states have (on average 1.3721020092735703) internal successors, (3551), 2657 states have internal predecessors, (3551), 1213 states have call successors, (1213), 210 states have call predecessors, (1213), 210 states have return successors, (1213), 1213 states have call predecessors, (1213), 1213 states have call successors, (1213) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:57:04,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:06,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:09,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:13,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:15,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:18,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:22,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:24,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:25,197 INFO L93 Difference]: Finished difference Result 11946 states and 18111 transitions. [2021-11-25 19:57:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-25 19:57:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:25,310 INFO L225 Difference]: With dead ends: 11946 [2021-11-25 19:57:25,310 INFO L226 Difference]: Without dead ends: 7896 [2021-11-25 19:57:25,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:25,367 INFO L933 BasicCegarLoop]: 7014 mSDtfsCounter, 5848 mSDsluCounter, 5893 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5860 SdHoareTripleChecker+Valid, 12388 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:25,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5860 Valid, 12388 Invalid, 1106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1095 Invalid, 8 Unknown, 0 Unchecked, 22.5s Time] [2021-11-25 19:57:25,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7896 states. [2021-11-25 19:57:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7896 to 7885. [2021-11-25 19:57:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7885 states, 5086 states have (on average 1.364726700747149) internal successors, (6941), 5203 states have internal predecessors, (6941), 2383 states have call successors, (2383), 416 states have call predecessors, (2383), 415 states have return successors, (2374), 2363 states have call predecessors, (2374), 2364 states have call successors, (2374) [2021-11-25 19:57:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7885 states to 7885 states and 11698 transitions. [2021-11-25 19:57:26,240 INFO L78 Accepts]: Start accepts. Automaton has 7885 states and 11698 transitions. Word has length 16 [2021-11-25 19:57:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:26,241 INFO L470 AbstractCegarLoop]: Abstraction has 7885 states and 11698 transitions. [2021-11-25 19:57:26,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:57:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7885 states and 11698 transitions. [2021-11-25 19:57:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:57:26,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:26,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:26,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:57:26,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1596099383, now seen corresponding path program 1 times [2021-11-25 19:57:26,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:26,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670221815] [2021-11-25 19:57:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:26,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:26,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:26,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670221815] [2021-11-25 19:57:26,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670221815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:26,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:26,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:57:26,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481665483] [2021-11-25 19:57:26,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:26,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:26,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:26,504 INFO L87 Difference]: Start difference. First operand 7885 states and 11698 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:57:28,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:31,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:34,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:36,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:37,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:40,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:43,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:46,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:46,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:46,589 INFO L93 Difference]: Finished difference Result 11976 states and 17748 transitions. [2021-11-25 19:57:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:46,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 19:57:46,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:46,625 INFO L225 Difference]: With dead ends: 11976 [2021-11-25 19:57:46,626 INFO L226 Difference]: Without dead ends: 4092 [2021-11-25 19:57:46,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:46,661 INFO L933 BasicCegarLoop]: 5433 mSDtfsCounter, 104 mSDsluCounter, 5890 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 10803 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:46,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 10803 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1054 Invalid, 7 Unknown, 0 Unchecked, 19.8s Time] [2021-11-25 19:57:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2021-11-25 19:57:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 4024. [2021-11-25 19:57:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 2597 states have (on average 1.3688871775125144) internal successors, (3555), 2664 states have internal predecessors, (3555), 1212 states have call successors, (1212), 215 states have call predecessors, (1212), 214 states have return successors, (1193), 1193 states have call predecessors, (1193), 1193 states have call successors, (1193) [2021-11-25 19:57:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 5960 transitions. [2021-11-25 19:57:46,873 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 5960 transitions. Word has length 16 [2021-11-25 19:57:46,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:46,874 INFO L470 AbstractCegarLoop]: Abstraction has 4024 states and 5960 transitions. [2021-11-25 19:57:46,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:57:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 5960 transitions. [2021-11-25 19:57:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 19:57:46,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:46,879 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:46,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:57:46,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1584073998, now seen corresponding path program 1 times [2021-11-25 19:57:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:46,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031229725] [2021-11-25 19:57:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:46,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:57:47,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:47,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031229725] [2021-11-25 19:57:47,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031229725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:47,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:47,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:47,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786705187] [2021-11-25 19:57:47,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:47,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:47,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:47,339 INFO L87 Difference]: Start difference. First operand 4024 states and 5960 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:57:49,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:51,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:54,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:57:56,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:00,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:02,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:05,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:05,504 INFO L93 Difference]: Finished difference Result 4105 states and 6071 transitions. [2021-11-25 19:58:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 64 [2021-11-25 19:58:05,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:05,534 INFO L225 Difference]: With dead ends: 4105 [2021-11-25 19:58:05,534 INFO L226 Difference]: Without dead ends: 4102 [2021-11-25 19:58:05,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:05,541 INFO L933 BasicCegarLoop]: 5391 mSDtfsCounter, 5841 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5854 SdHoareTripleChecker+Valid, 5489 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:05,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5854 Valid, 5489 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 551 Invalid, 7 Unknown, 0 Unchecked, 18.0s Time] [2021-11-25 19:58:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-11-25 19:58:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4091. [2021-11-25 19:58:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 2642 states have (on average 1.370552611657835) internal successors, (3621), 2712 states have internal predecessors, (3621), 1225 states have call successors, (1225), 224 states have call predecessors, (1225), 223 states have return successors, (1207), 1203 states have call predecessors, (1207), 1207 states have call successors, (1207) [2021-11-25 19:58:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 6053 transitions. [2021-11-25 19:58:05,748 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 6053 transitions. Word has length 64 [2021-11-25 19:58:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:05,749 INFO L470 AbstractCegarLoop]: Abstraction has 4091 states and 6053 transitions. [2021-11-25 19:58:05,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:58:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 6053 transitions. [2021-11-25 19:58:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 19:58:05,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:05,758 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:05,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:58:05,759 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1859568146, now seen corresponding path program 1 times [2021-11-25 19:58:05,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:05,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575913165] [2021-11-25 19:58:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:05,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:58:06,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:06,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575913165] [2021-11-25 19:58:06,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575913165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:06,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:06,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:06,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118565730] [2021-11-25 19:58:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:06,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:06,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:06,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:06,340 INFO L87 Difference]: Start difference. First operand 4091 states and 6053 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:58:08,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:10,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:13,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:15,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:17,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:20,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:22,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:25,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:25,407 INFO L93 Difference]: Finished difference Result 4109 states and 6075 transitions. [2021-11-25 19:58:25,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:25,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 65 [2021-11-25 19:58:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:25,437 INFO L225 Difference]: With dead ends: 4109 [2021-11-25 19:58:25,437 INFO L226 Difference]: Without dead ends: 4106 [2021-11-25 19:58:25,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:25,441 INFO L933 BasicCegarLoop]: 5430 mSDtfsCounter, 5850 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5861 SdHoareTripleChecker+Valid, 5525 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:25,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5861 Valid, 5525 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 558 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2021-11-25 19:58:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-25 19:58:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4096. [2021-11-25 19:58:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 2645 states have (on average 1.370132325141777) internal successors, (3624), 2715 states have internal predecessors, (3624), 1225 states have call successors, (1225), 226 states have call predecessors, (1225), 225 states have return successors, (1208), 1203 states have call predecessors, (1208), 1208 states have call successors, (1208) [2021-11-25 19:58:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 6057 transitions. [2021-11-25 19:58:25,813 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 6057 transitions. Word has length 65 [2021-11-25 19:58:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:25,816 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 6057 transitions. [2021-11-25 19:58:25,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:58:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 6057 transitions. [2021-11-25 19:58:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:58:25,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:25,818 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:25,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:58:25,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1809957009, now seen corresponding path program 1 times [2021-11-25 19:58:25,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:25,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380398698] [2021-11-25 19:58:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:25,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:58:26,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:26,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380398698] [2021-11-25 19:58:26,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380398698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:26,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:26,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:26,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025960067] [2021-11-25 19:58:26,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:26,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:26,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:26,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:26,203 INFO L87 Difference]: Start difference. First operand 4096 states and 6057 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:58:28,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:30,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:32,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:35,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:38,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:43,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:48,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:48,316 INFO L93 Difference]: Finished difference Result 6498 states and 9539 transitions. [2021-11-25 19:58:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:58:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66 [2021-11-25 19:58:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:48,371 INFO L225 Difference]: With dead ends: 6498 [2021-11-25 19:58:48,371 INFO L226 Difference]: Without dead ends: 6494 [2021-11-25 19:58:48,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:48,376 INFO L933 BasicCegarLoop]: 6556 mSDtfsCounter, 5789 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5797 SdHoareTripleChecker+Valid, 9639 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:48,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5797 Valid, 9639 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 934 Invalid, 7 Unknown, 0 Unchecked, 21.8s Time] [2021-11-25 19:58:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2021-11-25 19:58:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 6484. [2021-11-25 19:58:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6484 states, 4150 states have (on average 1.3595180722891567) internal successors, (5642), 4282 states have internal predecessors, (5642), 1927 states have call successors, (1927), 423 states have call predecessors, (1927), 406 states have return successors, (1955), 1856 states have call predecessors, (1955), 1910 states have call successors, (1955) [2021-11-25 19:58:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6484 states to 6484 states and 9524 transitions. [2021-11-25 19:58:48,709 INFO L78 Accepts]: Start accepts. Automaton has 6484 states and 9524 transitions. Word has length 66 [2021-11-25 19:58:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:48,710 INFO L470 AbstractCegarLoop]: Abstraction has 6484 states and 9524 transitions. [2021-11-25 19:58:48,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:58:48,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states and 9524 transitions. [2021-11-25 19:58:48,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:58:48,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:48,714 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:48,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:58:48,714 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:48,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:48,715 INFO L85 PathProgramCache]: Analyzing trace with hash 272016629, now seen corresponding path program 1 times [2021-11-25 19:58:48,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:48,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236931858] [2021-11-25 19:58:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:48,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:58:49,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:49,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236931858] [2021-11-25 19:58:49,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236931858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:49,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:58:49,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:58:49,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794930080] [2021-11-25 19:58:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:49,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:58:49,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:58:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:58:49,017 INFO L87 Difference]: Start difference. First operand 6484 states and 9524 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:58:51,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:53,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:55,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:58:58,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:00,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:02,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:04,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:07,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:07,530 INFO L93 Difference]: Finished difference Result 6502 states and 9550 transitions. [2021-11-25 19:59:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:59:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2021-11-25 19:59:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:07,565 INFO L225 Difference]: With dead ends: 6502 [2021-11-25 19:59:07,565 INFO L226 Difference]: Without dead ends: 6499 [2021-11-25 19:59:07,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:07,570 INFO L933 BasicCegarLoop]: 5428 mSDtfsCounter, 5842 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5855 SdHoareTripleChecker+Valid, 5526 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:07,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5855 Valid, 5526 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 558 Invalid, 7 Unknown, 0 Unchecked, 18.3s Time] [2021-11-25 19:59:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2021-11-25 19:59:07,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 6489. [2021-11-25 19:59:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 4154 states have (on average 1.3589311506981223) internal successors, (5645), 4285 states have internal predecessors, (5645), 1926 states have call successors, (1926), 423 states have call predecessors, (1926), 408 states have return successors, (1958), 1858 states have call predecessors, (1958), 1910 states have call successors, (1958) [2021-11-25 19:59:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 9529 transitions. [2021-11-25 19:59:07,883 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 9529 transitions. Word has length 67 [2021-11-25 19:59:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:07,884 INFO L470 AbstractCegarLoop]: Abstraction has 6489 states and 9529 transitions. [2021-11-25 19:59:07,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:59:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 9529 transitions. [2021-11-25 19:59:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 19:59:07,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:07,885 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:07,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:59:07,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash -159490028, now seen corresponding path program 1 times [2021-11-25 19:59:07,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:07,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050702634] [2021-11-25 19:59:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:07,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:59:08,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:08,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050702634] [2021-11-25 19:59:08,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050702634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:08,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:08,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:59:08,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120140008] [2021-11-25 19:59:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:08,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:59:08,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:08,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:59:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:08,147 INFO L87 Difference]: Start difference. First operand 6489 states and 9529 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:59:10,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:12,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:15,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:18,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:21,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:24,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:25,265 INFO L93 Difference]: Finished difference Result 6497 states and 9533 transitions. [2021-11-25 19:59:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:59:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 68 [2021-11-25 19:59:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:25,296 INFO L225 Difference]: With dead ends: 6497 [2021-11-25 19:59:25,296 INFO L226 Difference]: Without dead ends: 6493 [2021-11-25 19:59:25,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:25,303 INFO L933 BasicCegarLoop]: 5365 mSDtfsCounter, 105 mSDsluCounter, 5762 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 10621 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:25,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 10621 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1036 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2021-11-25 19:59:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2021-11-25 19:59:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 6491. [2021-11-25 19:59:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 4156 states have (on average 1.358036573628489) internal successors, (5644), 4285 states have internal predecessors, (5644), 1924 states have call successors, (1924), 425 states have call predecessors, (1924), 410 states have return successors, (1958), 1858 states have call predecessors, (1958), 1910 states have call successors, (1958) [2021-11-25 19:59:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 9526 transitions. [2021-11-25 19:59:25,598 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 9526 transitions. Word has length 68 [2021-11-25 19:59:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:25,599 INFO L470 AbstractCegarLoop]: Abstraction has 6491 states and 9526 transitions. [2021-11-25 19:59:25,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:59:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 9526 transitions. [2021-11-25 19:59:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 19:59:25,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:25,600 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:25,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:59:25,601 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -651289640, now seen corresponding path program 1 times [2021-11-25 19:59:25,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:25,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366998002] [2021-11-25 19:59:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:25,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:59:25,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:25,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366998002] [2021-11-25 19:59:25,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366998002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:25,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:25,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:59:25,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245760871] [2021-11-25 19:59:25,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:25,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:59:25,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:59:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:25,840 INFO L87 Difference]: Start difference. First operand 6491 states and 9526 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:59:28,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:30,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:32,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:35,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:36,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:38,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:40,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:42,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:44,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:47,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:50,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:51,024 INFO L93 Difference]: Finished difference Result 10624 states and 15356 transitions. [2021-11-25 19:59:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:59:51,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 69 [2021-11-25 19:59:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:51,073 INFO L225 Difference]: With dead ends: 10624 [2021-11-25 19:59:51,074 INFO L226 Difference]: Without dead ends: 10621 [2021-11-25 19:59:51,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:51,084 INFO L933 BasicCegarLoop]: 6565 mSDtfsCounter, 5825 mSDsluCounter, 3551 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5837 SdHoareTripleChecker+Valid, 9766 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:51,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5837 Valid, 9766 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 916 Invalid, 9 Unknown, 0 Unchecked, 24.9s Time] [2021-11-25 19:59:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2021-11-25 19:59:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 10610. [2021-11-25 19:59:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 6684 states have (on average 1.3324356672651108) internal successors, (8906), 6902 states have internal predecessors, (8906), 3177 states have call successors, (3177), 774 states have call predecessors, (3177), 748 states have return successors, (3259), 3079 states have call predecessors, (3259), 3164 states have call successors, (3259) [2021-11-25 19:59:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 15342 transitions. [2021-11-25 19:59:51,609 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 15342 transitions. Word has length 69 [2021-11-25 19:59:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:51,611 INFO L470 AbstractCegarLoop]: Abstraction has 10610 states and 15342 transitions. [2021-11-25 19:59:51,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:59:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 15342 transitions. [2021-11-25 19:59:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 19:59:51,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:51,612 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:51,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:59:51,613 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1282796439, now seen corresponding path program 1 times [2021-11-25 19:59:51,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:51,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129184281] [2021-11-25 19:59:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:51,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:59:51,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:51,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129184281] [2021-11-25 19:59:51,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129184281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:51,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:51,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:59:51,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94659588] [2021-11-25 19:59:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:51,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:59:51,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:51,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:59:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:59:51,865 INFO L87 Difference]: Start difference. First operand 10610 states and 15342 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 19:59:54,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:56,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:58,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:01,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:03,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:05,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:07,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:09,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:12,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:12,907 INFO L93 Difference]: Finished difference Result 10621 states and 15352 transitions. [2021-11-25 20:00:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:00:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 70 [2021-11-25 20:00:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:12,951 INFO L225 Difference]: With dead ends: 10621 [2021-11-25 20:00:12,951 INFO L226 Difference]: Without dead ends: 10618 [2021-11-25 20:00:12,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:12,961 INFO L933 BasicCegarLoop]: 5419 mSDtfsCounter, 5822 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5835 SdHoareTripleChecker+Valid, 5517 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:12,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5835 Valid, 5517 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 556 Invalid, 8 Unknown, 0 Unchecked, 20.7s Time] [2021-11-25 20:00:12,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2021-11-25 20:00:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10617. [2021-11-25 20:00:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10617 states, 6690 states have (on average 1.3319880418535126) internal successors, (8911), 6905 states have internal predecessors, (8911), 3176 states have call successors, (3176), 774 states have call predecessors, (3176), 750 states have return successors, (3261), 3083 states have call predecessors, (3261), 3164 states have call successors, (3261) [2021-11-25 20:00:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10617 states to 10617 states and 15348 transitions. [2021-11-25 20:00:13,448 INFO L78 Accepts]: Start accepts. Automaton has 10617 states and 15348 transitions. Word has length 70 [2021-11-25 20:00:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:13,448 INFO L470 AbstractCegarLoop]: Abstraction has 10617 states and 15348 transitions. [2021-11-25 20:00:13,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:00:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10617 states and 15348 transitions. [2021-11-25 20:00:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 20:00:13,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:13,449 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:13,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:00:13,449 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:00:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1109927611, now seen corresponding path program 1 times [2021-11-25 20:00:13,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:13,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670185243] [2021-11-25 20:00:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:13,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:00:13,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670185243] [2021-11-25 20:00:13,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670185243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:13,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:13,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:00:13,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326183171] [2021-11-25 20:00:13,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:13,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:00:13,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:13,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:00:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:13,702 INFO L87 Difference]: Start difference. First operand 10617 states and 15348 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:00:15,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:18,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:21,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:24,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:26,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:29,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:29,554 INFO L93 Difference]: Finished difference Result 10621 states and 15357 transitions. [2021-11-25 20:00:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:00:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 71 [2021-11-25 20:00:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:29,600 INFO L225 Difference]: With dead ends: 10621 [2021-11-25 20:00:29,600 INFO L226 Difference]: Without dead ends: 10618 [2021-11-25 20:00:29,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:29,609 INFO L933 BasicCegarLoop]: 5418 mSDtfsCounter, 5828 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5841 SdHoareTripleChecker+Valid, 5516 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:29,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5841 Valid, 5516 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 559 Invalid, 6 Unknown, 0 Unchecked, 15.6s Time] [2021-11-25 20:00:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2021-11-25 20:00:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10618. [2021-11-25 20:00:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10618 states, 6691 states have (on average 1.3317889702585564) internal successors, (8911), 6905 states have internal predecessors, (8911), 3175 states have call successors, (3175), 774 states have call predecessors, (3175), 751 states have return successors, (3268), 3084 states have call predecessors, (3268), 3164 states have call successors, (3268) [2021-11-25 20:00:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 15354 transitions. [2021-11-25 20:00:30,269 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 15354 transitions. Word has length 71 [2021-11-25 20:00:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:30,270 INFO L470 AbstractCegarLoop]: Abstraction has 10618 states and 15354 transitions. [2021-11-25 20:00:30,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:00:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 15354 transitions. [2021-11-25 20:00:30,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 20:00:30,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:30,271 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:30,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:00:30,272 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:00:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 45966106, now seen corresponding path program 1 times [2021-11-25 20:00:30,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686410438] [2021-11-25 20:00:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:30,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:00:30,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686410438] [2021-11-25 20:00:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686410438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:30,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:30,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:00:30,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580384425] [2021-11-25 20:00:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:30,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:00:30,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:00:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:30,522 INFO L87 Difference]: Start difference. First operand 10618 states and 15354 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:00:32,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:34,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:37,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:39,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:43,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:45,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:46,219 INFO L93 Difference]: Finished difference Result 11936 states and 16988 transitions. [2021-11-25 20:00:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:00:46,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 72 [2021-11-25 20:00:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:46,271 INFO L225 Difference]: With dead ends: 11936 [2021-11-25 20:00:46,271 INFO L226 Difference]: Without dead ends: 11932 [2021-11-25 20:00:46,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:46,280 INFO L933 BasicCegarLoop]: 5559 mSDtfsCounter, 5762 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5772 SdHoareTripleChecker+Valid, 6260 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:46,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5772 Valid, 6260 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 647 Invalid, 5 Unknown, 0 Unchecked, 15.3s Time] [2021-11-25 20:00:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11932 states. [2021-11-25 20:00:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11932 to 11927. [2021-11-25 20:00:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11927 states, 7443 states have (on average 1.3160016122531237) internal successors, (9795), 7672 states have internal predecessors, (9795), 3543 states have call successors, (3543), 975 states have call predecessors, (3543), 940 states have return successors, (3638), 3440 states have call predecessors, (3638), 3534 states have call successors, (3638) [2021-11-25 20:00:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11927 states to 11927 states and 16976 transitions. [2021-11-25 20:00:47,059 INFO L78 Accepts]: Start accepts. Automaton has 11927 states and 16976 transitions. Word has length 72 [2021-11-25 20:00:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:47,059 INFO L470 AbstractCegarLoop]: Abstraction has 11927 states and 16976 transitions. [2021-11-25 20:00:47,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:00:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11927 states and 16976 transitions. [2021-11-25 20:00:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 20:00:47,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:47,060 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:47,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:00:47,061 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:00:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1422902686, now seen corresponding path program 1 times [2021-11-25 20:00:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:47,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919235250] [2021-11-25 20:00:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:47,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:00:47,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:47,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919235250] [2021-11-25 20:00:47,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919235250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:47,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:47,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:00:47,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563766279] [2021-11-25 20:00:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:00:47,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:00:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:00:47,301 INFO L87 Difference]: Start difference. First operand 11927 states and 16976 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:00:49,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:51,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:54,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:57,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:59,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:00,722 INFO L93 Difference]: Finished difference Result 11929 states and 16977 transitions. [2021-11-25 20:01:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:01:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 73 [2021-11-25 20:01:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:00,772 INFO L225 Difference]: With dead ends: 11929 [2021-11-25 20:01:00,772 INFO L226 Difference]: Without dead ends: 11926 [2021-11-25 20:01:00,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:00,781 INFO L933 BasicCegarLoop]: 5412 mSDtfsCounter, 5822 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5834 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:00,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5834 Valid, 5510 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 5 Unknown, 0 Unchecked, 13.1s Time] [2021-11-25 20:01:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11926 states. [2021-11-25 20:01:01,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11926 to 11926. [2021-11-25 20:01:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11926 states, 7443 states have (on average 1.3158672578261454) internal successors, (9794), 7671 states have internal predecessors, (9794), 3542 states have call successors, (3542), 975 states have call predecessors, (3542), 940 states have return successors, (3638), 3440 states have call predecessors, (3638), 3534 states have call successors, (3638) [2021-11-25 20:01:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11926 states to 11926 states and 16974 transitions. [2021-11-25 20:01:01,426 INFO L78 Accepts]: Start accepts. Automaton has 11926 states and 16974 transitions. Word has length 73 [2021-11-25 20:01:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:01,427 INFO L470 AbstractCegarLoop]: Abstraction has 11926 states and 16974 transitions. [2021-11-25 20:01:01,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:01:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11926 states and 16974 transitions. [2021-11-25 20:01:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 20:01:01,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:01,428 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:01,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:01:01,429 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:01:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1158268573, now seen corresponding path program 1 times [2021-11-25 20:01:01,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:01,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579577831] [2021-11-25 20:01:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:01,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:01:01,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:01,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579577831] [2021-11-25 20:01:01,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579577831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:01,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:01,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:01:01,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163527997] [2021-11-25 20:01:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:01,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:01:01,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:01:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:01,780 INFO L87 Difference]: Start difference. First operand 11926 states and 16974 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:01:04,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:06,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:08,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:11,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:12,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:15,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:17,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:18,714 INFO L93 Difference]: Finished difference Result 11928 states and 16975 transitions. [2021-11-25 20:01:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:01:18,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2021-11-25 20:01:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:18,757 INFO L225 Difference]: With dead ends: 11928 [2021-11-25 20:01:18,757 INFO L226 Difference]: Without dead ends: 11925 [2021-11-25 20:01:18,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:18,766 INFO L933 BasicCegarLoop]: 5410 mSDtfsCounter, 5819 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5831 SdHoareTripleChecker+Valid, 5508 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:18,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5831 Valid, 5508 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 559 Invalid, 6 Unknown, 0 Unchecked, 16.5s Time] [2021-11-25 20:01:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11925 states. [2021-11-25 20:01:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11925 to 11925. [2021-11-25 20:01:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11925 states, 7443 states have (on average 1.315732903399167) internal successors, (9793), 7670 states have internal predecessors, (9793), 3541 states have call successors, (3541), 975 states have call predecessors, (3541), 940 states have return successors, (3638), 3440 states have call predecessors, (3638), 3534 states have call successors, (3638) [2021-11-25 20:01:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 16972 transitions. [2021-11-25 20:01:19,407 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 16972 transitions. Word has length 74 [2021-11-25 20:01:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:19,407 INFO L470 AbstractCegarLoop]: Abstraction has 11925 states and 16972 transitions. [2021-11-25 20:01:19,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:01:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 16972 transitions. [2021-11-25 20:01:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:01:19,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:19,408 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:19,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:01:19,409 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:01:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1544550529, now seen corresponding path program 1 times [2021-11-25 20:01:19,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:19,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820566036] [2021-11-25 20:01:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:19,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:01:19,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820566036] [2021-11-25 20:01:19,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820566036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:19,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:19,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:01:19,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35044630] [2021-11-25 20:01:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:19,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:01:19,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:01:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:19,637 INFO L87 Difference]: Start difference. First operand 11925 states and 16972 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:01:21,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:24,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:26,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:29,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:31,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:33,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:36,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:38,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:41,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:41,434 INFO L93 Difference]: Finished difference Result 11928 states and 16974 transitions. [2021-11-25 20:01:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:01:41,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2021-11-25 20:01:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:41,475 INFO L225 Difference]: With dead ends: 11928 [2021-11-25 20:01:41,475 INFO L226 Difference]: Without dead ends: 11925 [2021-11-25 20:01:41,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:41,484 INFO L933 BasicCegarLoop]: 5407 mSDtfsCounter, 5805 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5818 SdHoareTripleChecker+Valid, 5505 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:41,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5818 Valid, 5505 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 556 Invalid, 8 Unknown, 0 Unchecked, 21.4s Time] [2021-11-25 20:01:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11925 states. [2021-11-25 20:01:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11925 to 11924. [2021-11-25 20:01:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11924 states, 7443 states have (on average 1.3155985489721886) internal successors, (9792), 7669 states have internal predecessors, (9792), 3540 states have call successors, (3540), 975 states have call predecessors, (3540), 940 states have return successors, (3638), 3440 states have call predecessors, (3638), 3534 states have call successors, (3638) [2021-11-25 20:01:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11924 states to 11924 states and 16970 transitions. [2021-11-25 20:01:42,051 INFO L78 Accepts]: Start accepts. Automaton has 11924 states and 16970 transitions. Word has length 75 [2021-11-25 20:01:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:42,051 INFO L470 AbstractCegarLoop]: Abstraction has 11924 states and 16970 transitions. [2021-11-25 20:01:42,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:01:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 11924 states and 16970 transitions. [2021-11-25 20:01:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 20:01:42,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:42,053 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:42,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:01:42,053 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:01:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash 634394144, now seen corresponding path program 1 times [2021-11-25 20:01:42,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:42,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127700311] [2021-11-25 20:01:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:42,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:01:42,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:42,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127700311] [2021-11-25 20:01:42,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127700311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:42,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:42,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:01:42,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713787998] [2021-11-25 20:01:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:42,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:01:42,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:01:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:42,289 INFO L87 Difference]: Start difference. First operand 11924 states and 16970 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:01:44,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:46,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:48,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:51,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:56,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:58,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:01,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:01,539 INFO L93 Difference]: Finished difference Result 11926 states and 16971 transitions. [2021-11-25 20:02:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:02:01,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2021-11-25 20:02:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:01,568 INFO L225 Difference]: With dead ends: 11926 [2021-11-25 20:02:01,568 INFO L226 Difference]: Without dead ends: 11905 [2021-11-25 20:02:01,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:01,574 INFO L933 BasicCegarLoop]: 5407 mSDtfsCounter, 5811 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5824 SdHoareTripleChecker+Valid, 5505 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:01,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5824 Valid, 5505 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 7 Unknown, 0 Unchecked, 18.8s Time] [2021-11-25 20:02:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11905 states. [2021-11-25 20:02:02,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11905 to 11905. [2021-11-25 20:02:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11905 states, 7427 states have (on average 1.3157398680490104) internal successors, (9772), 7652 states have internal predecessors, (9772), 3538 states have call successors, (3538), 974 states have call predecessors, (3538), 939 states have return successors, (3637), 3439 states have call predecessors, (3637), 3533 states have call successors, (3637) [2021-11-25 20:02:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11905 states to 11905 states and 16947 transitions. [2021-11-25 20:02:02,136 INFO L78 Accepts]: Start accepts. Automaton has 11905 states and 16947 transitions. Word has length 76 [2021-11-25 20:02:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:02,137 INFO L470 AbstractCegarLoop]: Abstraction has 11905 states and 16947 transitions. [2021-11-25 20:02:02,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-25 20:02:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 11905 states and 16947 transitions. [2021-11-25 20:02:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:02:02,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:02,138 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-25 20:02:02,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:02:02,139 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:02:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:02,139 INFO L85 PathProgramCache]: Analyzing trace with hash 145152528, now seen corresponding path program 1 times [2021-11-25 20:02:02,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:02,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32389757] [2021-11-25 20:02:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:02,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-25 20:02:02,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32389757] [2021-11-25 20:02:02,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32389757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:02,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:02,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:02:02,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992217006] [2021-11-25 20:02:02,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:02:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:02:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:02,368 INFO L87 Difference]: Start difference. First operand 11905 states and 16947 transitions. 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, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:02:04,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:06,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:09,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:12,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:13,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:15,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:17,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:20,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:22,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:25,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:26,497 INFO L93 Difference]: Finished difference Result 11918 states and 16959 transitions. [2021-11-25 20:02:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:02:26,499 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, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 89 [2021-11-25 20:02:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:26,540 INFO L225 Difference]: With dead ends: 11918 [2021-11-25 20:02:26,541 INFO L226 Difference]: Without dead ends: 11915 [2021-11-25 20:02:26,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:26,547 INFO L933 BasicCegarLoop]: 6539 mSDtfsCounter, 5715 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5728 SdHoareTripleChecker+Valid, 9819 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:26,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5728 Valid, 9819 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 937 Invalid, 9 Unknown, 0 Unchecked, 23.6s Time] [2021-11-25 20:02:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2021-11-25 20:02:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 11904. [2021-11-25 20:02:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 7427 states have (on average 1.3154705803150666) internal successors, (9770), 7651 states have internal predecessors, (9770), 3537 states have call successors, (3537), 974 states have call predecessors, (3537), 939 states have return successors, (3637), 3439 states have call predecessors, (3637), 3533 states have call successors, (3637) [2021-11-25 20:02:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 16944 transitions. [2021-11-25 20:02:27,087 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 16944 transitions. Word has length 89 [2021-11-25 20:02:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:27,088 INFO L470 AbstractCegarLoop]: Abstraction has 11904 states and 16944 transitions. [2021-11-25 20:02:27,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:02:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 16944 transitions. [2021-11-25 20:02:27,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-25 20:02:27,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:27,092 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:27,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:02:27,092 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:02:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash 961755350, now seen corresponding path program 1 times [2021-11-25 20:02:27,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:27,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117143893] [2021-11-25 20:02:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:27,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 20:02:27,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:27,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117143893] [2021-11-25 20:02:27,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117143893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:27,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:27,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:02:27,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521592621] [2021-11-25 20:02:27,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:27,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:02:27,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:27,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:02:27,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:27,429 INFO L87 Difference]: Start difference. First operand 11904 states and 16944 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:02:30,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:32,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:34,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:39,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:42,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:44,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:46,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:49,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:52,073 INFO L93 Difference]: Finished difference Result 23805 states and 33877 transitions. [2021-11-25 20:02:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:02:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 149 [2021-11-25 20:02:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:52,108 INFO L225 Difference]: With dead ends: 23805 [2021-11-25 20:02:52,108 INFO L226 Difference]: Without dead ends: 11913 [2021-11-25 20:02:52,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:02:52,147 INFO L933 BasicCegarLoop]: 5340 mSDtfsCounter, 19 mSDsluCounter, 17565 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21340 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:52,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 21340 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2107 Invalid, 7 Unknown, 0 Unchecked, 23.9s Time] [2021-11-25 20:02:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2021-11-25 20:02:52,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 11906. [2021-11-25 20:02:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11906 states, 7429 states have (on average 1.3152510432090456) internal successors, (9771), 7653 states have internal predecessors, (9771), 3537 states have call successors, (3537), 974 states have call predecessors, (3537), 939 states have return successors, (3637), 3439 states have call predecessors, (3637), 3533 states have call successors, (3637) [2021-11-25 20:02:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11906 states to 11906 states and 16945 transitions. [2021-11-25 20:02:52,822 INFO L78 Accepts]: Start accepts. Automaton has 11906 states and 16945 transitions. Word has length 149 [2021-11-25 20:02:52,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:52,823 INFO L470 AbstractCegarLoop]: Abstraction has 11906 states and 16945 transitions. [2021-11-25 20:02:52,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:02:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11906 states and 16945 transitions. [2021-11-25 20:02:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 20:02:52,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:52,827 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:52,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:02:52,828 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:02:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1453001628, now seen corresponding path program 1 times [2021-11-25 20:02:52,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:52,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967249361] [2021-11-25 20:02:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:52,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 20:02:53,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:53,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967249361] [2021-11-25 20:02:53,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967249361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:53,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:53,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:02:53,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976245211] [2021-11-25 20:02:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:53,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:02:53,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:02:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:02:53,152 INFO L87 Difference]: Start difference. First operand 11906 states and 16945 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:02:55,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:58,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:00,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:04,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:06,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:09,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:12,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:16,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:17,617 INFO L93 Difference]: Finished difference Result 25343 states and 35890 transitions. [2021-11-25 20:03:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:03:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 150 [2021-11-25 20:03:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:17,659 INFO L225 Difference]: With dead ends: 25343 [2021-11-25 20:03:17,659 INFO L226 Difference]: Without dead ends: 13451 [2021-11-25 20:03:17,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:03:17,703 INFO L933 BasicCegarLoop]: 7001 mSDtfsCounter, 5824 mSDsluCounter, 11398 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 29 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5842 SdHoareTripleChecker+Valid, 17377 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:17,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5842 Valid, 17377 Invalid, 1743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 1706 Invalid, 8 Unknown, 0 Unchecked, 23.6s Time] [2021-11-25 20:03:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13451 states. [2021-11-25 20:03:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13451 to 13255. [2021-11-25 20:03:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13255 states, 8206 states have (on average 1.30368023397514) internal successors, (10698), 8448 states have internal predecessors, (10698), 3919 states have call successors, (3919), 1171 states have call predecessors, (3919), 1129 states have return successors, (4026), 3814 states have call predecessors, (4026), 3915 states have call successors, (4026) [2021-11-25 20:03:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 18643 transitions. [2021-11-25 20:03:18,557 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 18643 transitions. Word has length 150 [2021-11-25 20:03:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:18,558 INFO L470 AbstractCegarLoop]: Abstraction has 13255 states and 18643 transitions. [2021-11-25 20:03:18,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:03:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 18643 transitions. [2021-11-25 20:03:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-25 20:03:18,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:18,562 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:03:18,562 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash -682309816, now seen corresponding path program 1 times [2021-11-25 20:03:18,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:18,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856527464] [2021-11-25 20:03:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:18,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 20:03:18,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:18,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856527464] [2021-11-25 20:03:18,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856527464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:18,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:18,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:03:18,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737423915] [2021-11-25 20:03:18,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:18,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:03:18,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:03:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:03:18,834 INFO L87 Difference]: Start difference. First operand 13255 states and 18643 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:21,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:23,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:27,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:29,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:32,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:34,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:36,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:41,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:42,248 INFO L93 Difference]: Finished difference Result 26632 states and 37451 transitions. [2021-11-25 20:03:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:03:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 154 [2021-11-25 20:03:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:42,298 INFO L225 Difference]: With dead ends: 26632 [2021-11-25 20:03:42,298 INFO L226 Difference]: Without dead ends: 13391 [2021-11-25 20:03:42,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:03:42,333 INFO L933 BasicCegarLoop]: 6068 mSDtfsCounter, 9141 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 2324 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9154 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2324 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:42,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9154 Valid, 7174 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2324 Valid, 794 Invalid, 7 Unknown, 0 Unchecked, 22.7s Time] [2021-11-25 20:03:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13391 states. [2021-11-25 20:03:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13391 to 13183. [2021-11-25 20:03:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 8172 states have (on average 1.304209495839452) internal successors, (10658), 8414 states have internal predecessors, (10658), 3893 states have call successors, (3893), 1159 states have call predecessors, (3893), 1117 states have return successors, (4000), 3788 states have call predecessors, (4000), 3889 states have call successors, (4000) [2021-11-25 20:03:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 18551 transitions. [2021-11-25 20:03:43,043 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 18551 transitions. Word has length 154 [2021-11-25 20:03:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:43,043 INFO L470 AbstractCegarLoop]: Abstraction has 13183 states and 18551 transitions. [2021-11-25 20:03:43,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 18551 transitions. [2021-11-25 20:03:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-25 20:03:43,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:43,047 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:43,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:03:43,047 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1912503429, now seen corresponding path program 1 times [2021-11-25 20:03:43,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:43,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125019172] [2021-11-25 20:03:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:43,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-25 20:03:43,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:43,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125019172] [2021-11-25 20:03:43,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125019172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:43,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:43,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:43,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836618178] [2021-11-25 20:03:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:43,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:43,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:43,512 INFO L87 Difference]: Start difference. First operand 13183 states and 18551 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:03:45,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:48,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:50,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:53,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:55,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:58,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:00,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:03,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:06,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:07,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:07,307 INFO L93 Difference]: Finished difference Result 13197 states and 18558 transitions. [2021-11-25 20:04:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 184 [2021-11-25 20:04:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:07,359 INFO L225 Difference]: With dead ends: 13197 [2021-11-25 20:04:07,360 INFO L226 Difference]: Without dead ends: 13194 [2021-11-25 20:04:07,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:07,369 INFO L933 BasicCegarLoop]: 5334 mSDtfsCounter, 130 mSDsluCounter, 5722 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:07,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 10541 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 8 Unknown, 0 Unchecked, 23.2s Time] [2021-11-25 20:04:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13194 states. [2021-11-25 20:04:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13194 to 13194. [2021-11-25 20:04:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13194 states, 8178 states have (on average 1.3032526290046467) internal successors, (10658), 8419 states have internal predecessors, (10658), 3892 states have call successors, (3892), 1165 states have call predecessors, (3892), 1123 states have return successors, (4000), 3788 states have call predecessors, (4000), 3889 states have call successors, (4000) [2021-11-25 20:04:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13194 states to 13194 states and 18550 transitions. [2021-11-25 20:04:08,040 INFO L78 Accepts]: Start accepts. Automaton has 13194 states and 18550 transitions. Word has length 184 [2021-11-25 20:04:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:08,040 INFO L470 AbstractCegarLoop]: Abstraction has 13194 states and 18550 transitions. [2021-11-25 20:04:08,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:04:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 13194 states and 18550 transitions. [2021-11-25 20:04:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-25 20:04:08,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:08,060 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:08,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:04:08,060 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1056782143, now seen corresponding path program 1 times [2021-11-25 20:04:08,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:08,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730635073] [2021-11-25 20:04:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:08,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-11-25 20:04:14,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:14,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730635073] [2021-11-25 20:04:14,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730635073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:14,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:14,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:04:14,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177139599] [2021-11-25 20:04:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:14,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:14,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:14,310 INFO L87 Difference]: Start difference. First operand 13194 states and 18550 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-25 20:04:16,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:18,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:21,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:25,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:31,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:33,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:36,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:36,297 INFO L93 Difference]: Finished difference Result 26410 states and 37139 transitions. [2021-11-25 20:04:36,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:04:36,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 343 [2021-11-25 20:04:36,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:36,353 INFO L225 Difference]: With dead ends: 26410 [2021-11-25 20:04:36,353 INFO L226 Difference]: Without dead ends: 13230 [2021-11-25 20:04:36,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:36,391 INFO L933 BasicCegarLoop]: 5351 mSDtfsCounter, 7 mSDsluCounter, 11677 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15989 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:36,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 15989 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 21.2s Time] [2021-11-25 20:04:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13230 states. [2021-11-25 20:04:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13230 to 13211. [2021-11-25 20:04:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 8186 states have (on average 1.3029562667969705) internal successors, (10666), 8429 states have internal predecessors, (10666), 3900 states have call successors, (3900), 1165 states have call predecessors, (3900), 1124 states have return successors, (4009), 3796 states have call predecessors, (4009), 3897 states have call successors, (4009) [2021-11-25 20:04:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 18575 transitions. [2021-11-25 20:04:37,527 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 18575 transitions. Word has length 343 [2021-11-25 20:04:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:37,528 INFO L470 AbstractCegarLoop]: Abstraction has 13211 states and 18575 transitions. [2021-11-25 20:04:37,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-25 20:04:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 18575 transitions. [2021-11-25 20:04:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-25 20:04:37,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:37,567 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:37,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:04:37,568 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash -331715393, now seen corresponding path program 1 times [2021-11-25 20:04:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64560882] [2021-11-25 20:04:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:37,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-11-25 20:04:44,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:44,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64560882] [2021-11-25 20:04:44,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64560882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:44,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:44,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:04:44,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323571493] [2021-11-25 20:04:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:44,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:44,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:44,286 INFO L87 Difference]: Start difference. First operand 13211 states and 18575 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 20:04:46,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:49,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:53,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:55,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:57,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:00,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:02,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:04,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:06,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:09,205 INFO L93 Difference]: Finished difference Result 26426 states and 37161 transitions. [2021-11-25 20:05:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:05:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 350 [2021-11-25 20:05:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:09,308 INFO L225 Difference]: With dead ends: 26426 [2021-11-25 20:05:09,308 INFO L226 Difference]: Without dead ends: 13229 [2021-11-25 20:05:09,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:09,330 INFO L933 BasicCegarLoop]: 5343 mSDtfsCounter, 7 mSDsluCounter, 11723 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16012 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:09,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 16012 Invalid, 1603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2021-11-25 20:05:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2021-11-25 20:05:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 13215. [2021-11-25 20:05:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13215 states, 8190 states have (on average 1.3028083028083028) internal successors, (10670), 8433 states have internal predecessors, (10670), 3900 states have call successors, (3900), 1165 states have call predecessors, (3900), 1124 states have return successors, (4009), 3796 states have call predecessors, (4009), 3897 states have call successors, (4009) [2021-11-25 20:05:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 18579 transitions. [2021-11-25 20:05:10,028 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 18579 transitions. Word has length 350 [2021-11-25 20:05:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:10,029 INFO L470 AbstractCegarLoop]: Abstraction has 13215 states and 18579 transitions. [2021-11-25 20:05:10,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 20:05:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 18579 transitions. [2021-11-25 20:05:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-25 20:05:10,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:10,046 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:10,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 20:05:10,046 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:05:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:10,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1556222384, now seen corresponding path program 1 times [2021-11-25 20:05:10,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:10,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272160423] [2021-11-25 20:05:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:10,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2021-11-25 20:05:20,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:20,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272160423] [2021-11-25 20:05:20,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272160423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:20,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:20,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:05:20,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831083003] [2021-11-25 20:05:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:20,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:20,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:20,757 INFO L87 Difference]: Start difference. First operand 13215 states and 18579 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 20:05:23,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:25,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:28,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:32,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:37,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:40,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:45,402 INFO L93 Difference]: Finished difference Result 26628 states and 37480 transitions. [2021-11-25 20:05:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) Word has length 381 [2021-11-25 20:05:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:45,458 INFO L225 Difference]: With dead ends: 26628 [2021-11-25 20:05:45,458 INFO L226 Difference]: Without dead ends: 13427 [2021-11-25 20:05:45,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:05:45,499 INFO L933 BasicCegarLoop]: 5657 mSDtfsCounter, 236 mSDsluCounter, 18264 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 22302 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:45,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 22302 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2195 Invalid, 6 Unknown, 0 Unchecked, 23.7s Time] [2021-11-25 20:05:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2021-11-25 20:05:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13212. [2021-11-25 20:05:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 8189 states have (on average 1.302723165221639) internal successors, (10668), 8431 states have internal predecessors, (10668), 3898 states have call successors, (3898), 1164 states have call predecessors, (3898), 1124 states have return successors, (4007), 3796 states have call predecessors, (4007), 3895 states have call successors, (4007) [2021-11-25 20:05:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 18573 transitions. [2021-11-25 20:05:46,376 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 18573 transitions. Word has length 381 [2021-11-25 20:05:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:46,377 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 18573 transitions. [2021-11-25 20:05:46,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-25 20:05:46,378 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 18573 transitions. [2021-11-25 20:05:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-25 20:05:46,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:46,393 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:46,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 20:05:46,393 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:05:46,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:46,394 INFO L85 PathProgramCache]: Analyzing trace with hash 326425133, now seen corresponding path program 1 times [2021-11-25 20:05:46,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:46,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317578676] [2021-11-25 20:05:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:46,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-11-25 20:05:56,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:56,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317578676] [2021-11-25 20:05:56,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317578676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:56,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:56,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:05:56,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545654928] [2021-11-25 20:05:56,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:56,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:56,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:56,265 INFO L87 Difference]: Start difference. First operand 13212 states and 18573 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 20:05:58,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:01,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:05,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:08,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:10,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:13,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:16,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:18,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:21,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:22,578 INFO L93 Difference]: Finished difference Result 26782 states and 37728 transitions. [2021-11-25 20:06:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:06:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 359 [2021-11-25 20:06:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:22,632 INFO L225 Difference]: With dead ends: 26782 [2021-11-25 20:06:22,633 INFO L226 Difference]: Without dead ends: 13584 [2021-11-25 20:06:22,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:06:22,671 INFO L933 BasicCegarLoop]: 5652 mSDtfsCounter, 391 mSDsluCounter, 11848 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 158 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 16452 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:22,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 16452 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1627 Invalid, 8 Unknown, 0 Unchecked, 25.3s Time] [2021-11-25 20:06:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13584 states. [2021-11-25 20:06:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13584 to 13216. [2021-11-25 20:06:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13216 states, 8193 states have (on average 1.3025753692176247) internal successors, (10672), 8435 states have internal predecessors, (10672), 3898 states have call successors, (3898), 1164 states have call predecessors, (3898), 1124 states have return successors, (4007), 3796 states have call predecessors, (4007), 3895 states have call successors, (4007) [2021-11-25 20:06:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13216 states to 13216 states and 18577 transitions. [2021-11-25 20:06:23,610 INFO L78 Accepts]: Start accepts. Automaton has 13216 states and 18577 transitions. Word has length 359 [2021-11-25 20:06:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:23,611 INFO L470 AbstractCegarLoop]: Abstraction has 13216 states and 18577 transitions. [2021-11-25 20:06:23,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 20:06:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 13216 states and 18577 transitions. [2021-11-25 20:06:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2021-11-25 20:06:23,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:23,628 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:06:23,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 20:06:23,628 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:06:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash 182295796, now seen corresponding path program 1 times [2021-11-25 20:06:23,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:23,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956623495] [2021-11-25 20:06:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:23,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-25 20:06:24,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956623495] [2021-11-25 20:06:24,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956623495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:06:24,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:06:24,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:06:24,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959098721] [2021-11-25 20:06:24,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:06:24,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:06:24,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:06:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:06:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:24,140 INFO L87 Difference]: Start difference. First operand 13216 states and 18577 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 2 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-25 20:06:26,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:28,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:30,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:34,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:37,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:39,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:42,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:44,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:47,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:06:48,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:06:48,644 INFO L93 Difference]: Finished difference Result 26436 states and 37185 transitions. [2021-11-25 20:06:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:06:48,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 2 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 582 [2021-11-25 20:06:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:06:48,680 INFO L225 Difference]: With dead ends: 26436 [2021-11-25 20:06:48,680 INFO L226 Difference]: Without dead ends: 13234 [2021-11-25 20:06:48,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:06:48,707 INFO L933 BasicCegarLoop]: 5333 mSDtfsCounter, 1 mSDsluCounter, 5853 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10664 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:06:48,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10664 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1050 Invalid, 8 Unknown, 0 Unchecked, 23.7s Time] [2021-11-25 20:06:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13234 states. [2021-11-25 20:06:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13234 to 13222. [2021-11-25 20:06:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13222 states, 8199 states have (on average 1.3023539456031223) internal successors, (10678), 8441 states have internal predecessors, (10678), 3898 states have call successors, (3898), 1164 states have call predecessors, (3898), 1124 states have return successors, (4007), 3796 states have call predecessors, (4007), 3895 states have call successors, (4007) [2021-11-25 20:06:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13222 states to 13222 states and 18583 transitions. [2021-11-25 20:06:49,481 INFO L78 Accepts]: Start accepts. Automaton has 13222 states and 18583 transitions. Word has length 582 [2021-11-25 20:06:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:06:49,482 INFO L470 AbstractCegarLoop]: Abstraction has 13222 states and 18583 transitions. [2021-11-25 20:06:49,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 2 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-25 20:06:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13222 states and 18583 transitions. [2021-11-25 20:06:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-25 20:06:49,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:06:49,500 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:06:49,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 20:06:49,501 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:06:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:06:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2054885153, now seen corresponding path program 1 times [2021-11-25 20:06:49,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:06:49,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553216746] [2021-11-25 20:06:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:49,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:06:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:06:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-25 20:06:56,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:06:56,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553216746] [2021-11-25 20:06:56,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553216746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:06:56,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181869787] [2021-11-25 20:06:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:06:56,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:06:56,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:06:56,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:06:56,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:07:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:07,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 33915 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:07:07,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:07:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-25 20:07:09,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:07:09,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181869787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:09,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:07:09,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-11-25 20:07:09,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234697612] [2021-11-25 20:07:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:09,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:07:09,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:07:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:07:09,291 INFO L87 Difference]: Start difference. First operand 13222 states and 18583 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-25 20:07:11,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:13,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:16,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:20,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:22,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:24,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:27,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:31,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:33,502 INFO L93 Difference]: Finished difference Result 26464 states and 37202 transitions. [2021-11-25 20:07:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 476 [2021-11-25 20:07:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:33,537 INFO L225 Difference]: With dead ends: 26464 [2021-11-25 20:07:33,538 INFO L226 Difference]: Without dead ends: 13256 [2021-11-25 20:07:33,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:07:33,565 INFO L933 BasicCegarLoop]: 5351 mSDtfsCounter, 7 mSDsluCounter, 11678 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15989 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:33,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15989 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1616 Invalid, 7 Unknown, 0 Unchecked, 23.3s Time] [2021-11-25 20:07:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13256 states. [2021-11-25 20:07:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13256 to 13222. [2021-11-25 20:07:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13222 states, 8199 states have (on average 1.3023539456031223) internal successors, (10678), 8442 states have internal predecessors, (10678), 3898 states have call successors, (3898), 1164 states have call predecessors, (3898), 1124 states have return successors, (4007), 3796 states have call predecessors, (4007), 3895 states have call successors, (4007) [2021-11-25 20:07:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13222 states to 13222 states and 18583 transitions. [2021-11-25 20:07:34,341 INFO L78 Accepts]: Start accepts. Automaton has 13222 states and 18583 transitions. Word has length 476 [2021-11-25 20:07:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:34,342 INFO L470 AbstractCegarLoop]: Abstraction has 13222 states and 18583 transitions. [2021-11-25 20:07:34,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-25 20:07:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13222 states and 18583 transitions. [2021-11-25 20:07:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-25 20:07:34,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:34,351 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:34,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:07:34,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:07:34,568 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:07:34,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -428627858, now seen corresponding path program 1 times [2021-11-25 20:07:34,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:34,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113220052] [2021-11-25 20:07:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:34,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-25 20:07:34,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113220052] [2021-11-25 20:07:34,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113220052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:07:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900021522] [2021-11-25 20:07:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:34,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:07:34,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:34,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:07:34,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:07:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 6588 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:07:41,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:07:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-11-25 20:07:42,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:07:42,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900021522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:42,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:07:42,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:07:42,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718399151] [2021-11-25 20:07:42,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:42,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:42,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:42,374 INFO L87 Difference]: Start difference. First operand 13222 states and 18583 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-25 20:07:44,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:46,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:49,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:52,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:55,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:57,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:07:59,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:08:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:03,326 INFO L93 Difference]: Finished difference Result 26460 states and 37231 transitions. [2021-11-25 20:08:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:08:03,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 517 [2021-11-25 20:08:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:03,362 INFO L225 Difference]: With dead ends: 26460 [2021-11-25 20:08:03,362 INFO L226 Difference]: Without dead ends: 13252 [2021-11-25 20:08:03,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:08:03,393 INFO L933 BasicCegarLoop]: 5332 mSDtfsCounter, 4 mSDsluCounter, 5852 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10661 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:03,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10661 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1056 Invalid, 7 Unknown, 0 Unchecked, 20.2s Time] [2021-11-25 20:08:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13252 states. [2021-11-25 20:08:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13252 to 13228. [2021-11-25 20:08:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13228 states, 8205 states have (on average 1.302132845825716) internal successors, (10684), 8448 states have internal predecessors, (10684), 3898 states have call successors, (3898), 1164 states have call predecessors, (3898), 1124 states have return successors, (4007), 3796 states have call predecessors, (4007), 3895 states have call successors, (4007) [2021-11-25 20:08:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13228 states to 13228 states and 18589 transitions. [2021-11-25 20:08:04,048 INFO L78 Accepts]: Start accepts. Automaton has 13228 states and 18589 transitions. Word has length 517 [2021-11-25 20:08:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:04,049 INFO L470 AbstractCegarLoop]: Abstraction has 13228 states and 18589 transitions. [2021-11-25 20:08:04,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2021-11-25 20:08:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 13228 states and 18589 transitions. [2021-11-25 20:08:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2021-11-25 20:08:04,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:04,065 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:04,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:08:04,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-25 20:08:04,280 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:08:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:04,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1577151736, now seen corresponding path program 1 times [2021-11-25 20:08:04,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:04,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73419214] [2021-11-25 20:08:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:04,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-11-25 20:08:04,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:04,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73419214] [2021-11-25 20:08:04,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73419214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:08:04,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280775834] [2021-11-25 20:08:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:04,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:08:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:08:04,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:08:04,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9202d0b9-2ca6-49de-b360-8203743c392e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:08:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:10,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 7296 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:08:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:08:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-11-25 20:08:12,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:08:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-11-25 20:08:14,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280775834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:08:14,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519345336] [2021-11-25 20:08:14,467 INFO L159 IcfgInterpreter]: Started Sifa with 335 locations of interest [2021-11-25 20:08:14,467 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:08:14,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:08:14,481 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:08:14,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:08:21,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 673 treesize of output 567 [2021-11-25 20:08:22,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:22,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:22,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:22,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:08:23,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 100 select indices, 100 select index equivalence classes, 5151 disjoint index pairs (out of 4950 index pairs), introduced 100 new quantified variables, introduced 0 case distinctions, treesize of input 3745 treesize of output 3304 [2021-11-25 20:08:26,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 669 treesize of output 563